7+ Is 87651 a CLIA Waived Test? [Quick Guide]


7+ Is 87651 a CLIA Waived Test? [Quick Guide]

Code 87651 designates laboratory evaluation for infectious agent detection by way of amplified probe approach. This code particularly applies to assays focusing on respiratory viruses, similar to influenza or RSV. Figuring out whether or not a process recognized by this code qualifies for CLIA waiver standing is essential for laboratories in search of to carry out point-of-care testing. The designation of “CLIA waived” signifies the check’s simplicity and minimal danger of faulty outcomes, permitting it to be performed in settings outdoors conventional medical laboratories.

The importance of a check’s CLIA waiver standing lies in its impression on accessibility to diagnostic testing. Waived exams could be carried out in various areas, together with doctor’s places of work, pharmacies, and even colleges, probably resulting in faster diagnoses and extra well timed therapy interventions. The Facilities for Medicare & Medicaid Providers (CMS) grants waivers primarily based on stringent standards, making certain that such exams are simple to carry out and interpret, thus minimizing the potential of inaccurate outcomes. The historic context of CLIA waivers highlights a drive towards decentralized testing to boost public well being responsiveness.

To establish if a particular assay utilizing code 87651 is CLIA waived, one should seek the advice of the official record of waived exams maintained by the CMS. This useful resource offers a definitive reply concerning the waiver standing of specific exams and is often up to date. Examination of the assay’s particular producer and product identify on the CMS web site is crucial to find out its eligibility for CLIA waiver.

1. Respiratory Virus Detection

Respiratory virus detection, significantly regarding CPT code 87651 and its CLIA waiver standing, represents a important intersection of diagnostic testing and public well being accessibility. The flexibility to quickly and precisely determine respiratory pathogens is crucial for efficient illness administration and outbreak management. This part will discover particular sides of this connection.

  • Level-of-Care Diagnostics and Accessibility

    The CLIA waiver standing considerably influences the accessibility of respiratory virus detection exams. If an assay utilizing code 87651 is CLIA waived, it may be carried out on the level of care, increasing testing past conventional laboratory settings. This decentralization will increase entry for underserved populations, facilitates faster diagnoses, and permits for fast initiation of acceptable therapy or isolation measures. As an example, a CLIA-waived speedy influenza check could be administered in a doctor’s workplace, yielding outcomes inside minutes, in comparison with probably days for a lab-processed check.

  • Influence on Public Well being Response

    Widespread availability of CLIA-waived respiratory virus detection exams strengthens public well being response capabilities. Throughout seasonal outbreaks or pandemics, speedy and decentralized testing allows well timed identification of contaminated people, facilitating focused interventions similar to antiviral remedy administration or implementation of an infection management protocols. A group well being clinic, outfitted with CLIA-waived exams for a number of respiratory viruses, can effectively display people presenting with signs, stopping additional unfold inside the group.

  • Complexity of Testing Procedures

    The complexity of a respiratory virus detection check straight dictates its CLIA waiver eligibility. Assays using amplified probe strategies, as indicated by code 87651, usually require specialised gear and technical experience. To qualify for a CLIA waiver, these exams have to be simplified to reduce the danger of faulty outcomes, similar to by means of automation or pre-packaged reagents. An instance is a molecular check for RSV detection that makes use of a pre-filled cartridge and an automatic reader, lowering the potential for human error throughout pattern processing and interpretation.

  • Regulatory Oversight and High quality Assurance

    Stringent regulatory oversight is essential to take care of the accuracy and reliability of CLIA-waived respiratory virus detection exams. Even with simplified procedures, adherence to high quality management measures is crucial. Laboratories performing these exams should reveal competency and take part in proficiency testing packages to make sure constant and correct outcomes. A doctor’s workplace utilizing a CLIA-waived influenza check should often carry out high quality management checks and doc the outcomes to adjust to CLIA rules and keep the integrity of the testing course of.

These sides spotlight the multifaceted relationship between respiratory virus detection and the CLIA waiver standing of exams utilizing code 87651. In the end, the accessibility, public well being impression, complexity, and regulatory oversight collectively decide the function of those exams in enhancing affected person outcomes and safeguarding public well being.

2. Amplified Probe Approach

The amplified probe approach, central to CPT code 87651, considerably influences whether or not a check utilizing this code can obtain CLIA waiver standing. This system, which includes amplifying particular genetic sequences of a goal organism to boost detection sensitivity, usually necessitates specialised gear and educated personnel. Consequently, its inherent complexity presents a hurdle to CLIA waiver eligibility. If the amplified probe approach employed in a specific assay requires quite a few guide steps, intricate reagent preparation, or subjective interpretation of outcomes, it’s unlikely to satisfy the factors for a CLIA waiver.

Nonetheless, developments in expertise have led to the event of simplified amplified probe assays. Automation, pre-packaged reagents, and user-friendly interfaces can mitigate the complexity related to this system. For instance, a speedy PCR check for influenza A/B, using code 87651, could be thought of for CLIA waiver standing if it includes a single-step pattern preparation course of, automated amplification, and an instrument that objectively reads and interprets the outcomes. The secret’s to reduce the potential for human error and subjective judgment all through the testing course of.

In abstract, the applying of amplified probe strategies inside the scope of CPT code 87651 doesn’t routinely preclude CLIA waiver eligibility. Somewhat, the precise implementation of the approach, significantly regarding its complexity and ease of use, is the figuring out issue. Simplified, automated amplified probe assays have the potential to attain CLIA waiver standing, increasing entry to speedy and correct diagnostic testing in point-of-care settings. The problem lies in balancing the sensitivity and specificity afforded by amplification with the necessity for simplicity and minimal danger of error required for CLIA waiver approval.

3. CLIA Waiver Eligibility

The dedication of CLIA waiver eligibility straight influences the sensible utility of CPT code 87651. If an assay using code 87651, which designates amplified probe detection of respiratory viruses, is granted a CLIA waiver, it permits for efficiency in settings outdoors conventional medical laboratories. This expanded accessibility is based on the assay’s demonstrated simplicity and minimal danger of producing inaccurate outcomes. The Facilities for Medicare & Medicaid Providers (CMS) establishes the factors for CLIA waivers, assessing the complexity of testing procedures and the potential for errors. An instance of a real-world impression can be a speedy influenza check using amplified probe expertise; if deemed CLIA-waived, it may be administered in a doctor’s workplace or pharmacy, yielding sooner outcomes and enabling immediate therapy selections.

Conversely, ought to a check categorized underneath CPT code 87651 fail to satisfy the requirements for CLIA waiver eligibility, its utilization is restricted to laboratories assembly particular CLIA necessities. These laboratories usually have extra stringent high quality management measures, personnel {qualifications}, and infrastructure. This restriction impacts the pace and placement of diagnostic testing. Think about a extra advanced molecular assay for respiratory syncytial virus (RSV); if it requires specialised gear and expert technicians, it’s unlikely to be CLIA-waived and would subsequently be confined to licensed laboratories. The sensible impact is a probably longer turnaround time for outcomes, which might delay therapy, significantly for susceptible populations.

In abstract, CLIA waiver eligibility is a important determinant of the accessibility and utility of exams related to CPT code 87651. The granting of a waiver allows broader utility in point-of-care settings, enhancing affected person outcomes by means of speedy prognosis and therapy. Nonetheless, the stringent necessities for CLIA waivers make sure that solely easy, dependable exams are carried out outdoors of conventional laboratory environments, balancing accessibility with the necessity for correct and reliable outcomes. This steadiness is central to safeguarding public well being and making certain acceptable affected person care.

4. CMS Official Record

The Facilities for Medicare & Medicaid Providers (CMS) Official Record serves because the definitive supply for figuring out the CLIA waiver standing of any given check, together with these categorized underneath CPT code 87651. This record is meticulously maintained and often up to date to mirror adjustments in check methodologies, producer claims, and regulatory selections concerning check complexity. Due to this fact, it’s the important reference level for laboratories, healthcare suppliers, and point-of-care testing websites in search of to determine whether or not a particular assay meets the factors for a CLIA waiver.

  • Content material and Construction

    The CMS Official Record contains an exhaustive compilation of exams which were granted CLIA waivers. Every entry usually contains the check identify, producer, meant use, and particular CLIA waiver standing. The record is often offered in a searchable format, permitting customers to shortly find info related to their particular wants. For instance, if a laboratory is contemplating implementing a speedy influenza A/B check utilizing amplified probe expertise (probably categorized underneath 87651), it should seek the advice of the CMS Official Record to substantiate whether or not the precise check equipment is at present CLIA waived. The construction ensures that the consumer can confirm the precise product and never simply the check kind.

  • Common Updates and Revisions

    The CMS Official Record just isn’t static; it undergoes periodic updates and revisions to mirror new check approvals, adjustments in producer directions, or re-evaluations of check complexity. These updates are essential as a result of a check’s CLIA waiver standing can change over time. As an example, a producer would possibly modify a beforehand waived check, altering its complexity and probably rendering it now not eligible for a waiver. Staying abreast of those updates is crucial for sustaining compliance with CLIA rules. Failure to confirm a check’s present standing on the CMS Official Record might end in penalties and sanctions.

  • Authorized and Regulatory Implications

    The CMS Official Record carries vital authorized and regulatory weight. It’s the authoritative doc utilized by regulatory companies to find out compliance with CLIA rules. If a facility performs a check that’s not included on the CMS Official Record as a waived check, and the power doesn’t meet the necessities for reasonable or excessive complexity testing, it’s in violation of CLIA rules. This will result in fines, suspension of testing privileges, or different enforcement actions. Due to this fact, adherence to the CMS Official Record just isn’t merely a suggestion however a authorized requirement for any entity performing laboratory testing.

  • Accessibility and Interpretation

    The CMS strives to make the Official Record accessible to a broad viewers. It’s usually out there on the CMS web site in a downloadable or searchable format. Nonetheless, deciphering the data on the record could require some familiarity with laboratory testing terminology and CLIA rules. In circumstances of uncertainty, it’s advisable to seek the advice of with a laboratory skilled or regulatory professional to make sure correct understanding and compliance. For instance, a small doctor’s workplace might have help deciphering the record to precisely decide if a point-of-care check they want to implement is really CLIA waived, making certain they meet all regulatory necessities.

In conclusion, the CMS Official Record is the indispensable useful resource for definitively answering the query of whether or not a check lined by CPT code 87651, or every other laboratory check, is CLIA waived. Its correct and constant utility ensures regulatory compliance and facilitates the suitable use of diagnostic testing in various healthcare settings.

5. Complexity Evaluation

The dedication of whether or not a check using CPT code 87651 is CLIA waived hinges critically on a complete complexity evaluation. This analysis, performed by the Facilities for Medicare & Medicaid Providers (CMS), scrutinizes numerous sides of the testing process to determine its ease of use and potential for error. The end result of this evaluation straight dictates whether or not the check could be carried out in settings with much less stringent regulatory oversight, similar to doctor’s places of work or pharmacies.

  • Procedural Steps and Manipulation

    The quantity and intricacy of procedural steps are paramount within the complexity evaluation. Exams requiring a number of guide manipulations, advanced reagent preparation, or exact timing are typically deemed extra advanced. As an example, an amplified probe assay for respiratory viruses (87651) involving quite a few pipetting steps, meticulous temperature controls, and subjective interpretation of outcomes would possible be labeled as excessive complexity. Conversely, an assay with pre-packaged reagents, minimal hands-on time, and automatic end result interpretation is extra more likely to be thought of for a CLIA waiver. The extra steps and required manipulation, the much less possible CLIA waiver standing could be achived.

  • Coaching and Ability Necessities

    The extent of coaching and ability required to carry out and interpret the check is a big issue. Exams demanding specialised experience or in depth information of laboratory strategies are usually categorized as reasonable or excessive complexity. A molecular check for influenza A/B, labeled underneath 87651, that necessitates in depth coaching in nucleic acid amplification, high quality management procedures, and troubleshooting would possible not qualify for a CLIA waiver. Conversely, a check that may be carried out precisely by people with minimal coaching, following easy, step-by-step directions, has the next chance of attaining CLIA waiver standing. The ability required to execute the check have to be so simple as doable so as to get hold of a waiver.

  • Interpretation and Judgment

    The diploma of subjective interpretation or judgment concerned in end result evaluation is a vital determinant of complexity. Exams that rely closely on visible inspection, require nuanced sample recognition, or contain subjective interpretation of information are typically deemed extra advanced. As an example, an amplified probe assay (87651) requiring a technician to visually assess band depth on a gel electrophoresis picture to find out the presence or absence of a viral goal can be thought of excessive complexity. In distinction, a check using an automatic instrument that objectively reads and interprets outcomes, eliminating subjective human evaluation, is extra more likely to meet CLIA waiver standards. The subjectivity have to be minimal for CLIA waiver standing.

  • Error Potential and Danger Mitigation

    The potential for errors and the provision of built-in mechanisms to mitigate these errors play a big function within the complexity evaluation. Exams with a excessive danger of false optimistic or false destructive outcomes, significantly if these errors might result in hostile affected person outcomes, are much less more likely to be CLIA waived. An amplified probe assay (87651) missing sturdy inner controls or high quality assurance measures can be thought of excessive danger. Conversely, a check incorporating a number of inner controls, automated error detection techniques, and clear troubleshooting tips can be considered extra favorably. The chance of false readings attributable to operational errors have to be minimized to attain CLIA waiver eligibility.

In conclusion, the complexity evaluation serves as a gatekeeper, making certain that solely exams with minimal potential for error and ease of operation are granted CLIA waivers. This course of straight impacts the accessibility of exams underneath CPT code 87651, figuring out whether or not they are often deployed in various healthcare settings to facilitate speedy prognosis and therapy of respiratory viral infections. The evaluation is a crucial part in balancing the necessity for correct diagnostic info with the crucial to make testing extensively out there.

6. Level-of-Care Testing

Level-of-care testing (POCT) represents a paradigm shift in diagnostic medication, enabling medical exams to be carried out close to the affected person, usually outdoors the confines of a standard laboratory setting. This method has vital implications for CPT code 87651, which designates amplified probe detection of respiratory viruses, significantly in figuring out whether or not assays utilizing this code could be CLIA waived, thus facilitating wider accessibility and sooner outcomes.

  • Accessibility and Timeliness of Outcomes

    POCT, when coupled with a CLIA-waived check utilizing CPT code 87651, drastically improves accessibility to respiratory virus diagnostics and reduces the turnaround time for outcomes. A CLIA-waived speedy influenza check carried out at a doctor’s workplace or pressing care clinic permits for fast prognosis and initiation of acceptable therapy, probably stopping additional unfold of the virus. This contrasts sharply with laboratory-based testing, the place samples have to be transported to a central facility, processed, and analyzed, usually leading to delays that may impede efficient affected person administration and public well being interventions.

  • Influence on Scientific Choice-Making

    The immediacy of outcomes offered by POCT straight impacts medical decision-making. A CLIA-waived check for respiratory syncytial virus (RSV), categorized underneath CPT code 87651, carried out on the bedside of an toddler presenting with respiratory misery can shortly inform therapy selections, such because the administration of antiviral medicines or the implementation of supportive care measures. This speedy entry to diagnostic info empowers healthcare suppliers to make extra knowledgeable and well timed selections, probably enhancing affected person outcomes and lowering the necessity for pointless hospitalizations.

  • Challenges in High quality Management and Assurance

    Whereas POCT gives quite a few advantages, it additionally presents distinctive challenges in sustaining high quality management and assurance. Decentralized testing requires sturdy high quality administration techniques to make sure correct and dependable outcomes, whatever the testing location or the personnel performing the check. For a CLIA-waived check utilizing CPT code 87651, this would possibly contain common proficiency testing, adherence to standardized working procedures, and implementation of inner high quality management measures to detect and forestall errors. Constant monitoring and documentation are important to sustaining the integrity of POCT outcomes and making certain affected person security. Improper high quality management can invalidate a check, so correct upkeep of high quality is extremely useful.

  • Regulatory Compliance and Oversight

    POCT is topic to rigorous regulatory oversight to make sure compliance with established requirements and tips. The CLIA rules play a central function in governing POCT, dictating the necessities for personnel {qualifications}, high quality management procedures, and proficiency testing. Services performing CLIA-waived exams utilizing CPT code 87651 should adhere to those rules to take care of their certification and keep away from penalties. Common inspections and audits are performed to confirm compliance and make sure that testing is carried out precisely and reliably. Due to this fact, for POCT the significance of regulatory compliance can’t be overstated.

In essence, the interaction between POCT and the CLIA waiver standing of exams underneath CPT code 87651 is pivotal in shaping the panorama of respiratory virus diagnostics. Whereas POCT gives the potential to enhance accessibility and timeliness of outcomes, it additionally necessitates cautious consideration to high quality management, assurance, and regulatory compliance to make sure correct and dependable outcomes. The efficient implementation of POCT requires a balanced method that leverages the advantages of decentralized testing whereas mitigating the related dangers, in the end enhancing affected person care and safeguarding public well being.

7. Regulatory Compliance

Regulatory compliance is paramount within the context of CPT code 87651, which identifies amplified probe strategies for infectious agent detection. This code’s applicability, significantly regarding CLIA waiver standing, is intricately linked to adherence to established requirements and tips. The proper utility of diagnostic testing underneath 87651, particularly whether or not it may be carried out outdoors a standard laboratory setting, hinges on assembly stringent regulatory standards.

  • CLIA Certification and Necessities

    The Scientific Laboratory Enchancment Amendments (CLIA) rules govern all laboratory testing carried out on people in the USA. Laboratories performing exams underneath CPT code 87651 should maintain the suitable CLIA certificates, which depends on the complexity of the check. If the check just isn’t CLIA-waived, the laboratory should meet extra stringent necessities for personnel {qualifications}, high quality management, and proficiency testing. For instance, a hospital laboratory performing a fancy molecular assay for influenza A/B (87651) must reveal compliance by means of common inspections and participation in proficiency testing packages. CLIA compliance straight impacts the place and by whom the check could be carried out.

  • Adherence to Producer’s Directions

    Strict adherence to the producer’s directions for a given check is a important part of regulatory compliance. These directions define the right procedures for specimen assortment, dealing with, processing, and interpretation of outcomes. Deviations from these directions can compromise the accuracy and reliability of the check, probably resulting in incorrect diagnoses and inappropriate therapy selections. For instance, a point-of-care testing web site utilizing a CLIA-waived respiratory virus panel (87651) should meticulously comply with the producer’s tips for storage, high quality management checks, and end result interpretation to take care of compliance and guarantee correct outcomes. Non-compliance straight invalidate exams underneath CMS requirements.

  • High quality Management and High quality Assurance

    Strong high quality management (QC) and high quality assurance (QA) packages are important for sustaining regulatory compliance. QC includes the common monitoring and analysis of testing procedures to determine and proper any errors or deficiencies. QA encompasses a broader vary of actions designed to make sure the general high quality and reliability of laboratory companies. For instance, a medical laboratory performing amplified probe detection of respiratory viruses (87651) should implement complete QC procedures, together with each day controls, reagent verification, and instrument upkeep. QA actions would possibly embrace common audits, proficiency testing participation, and documentation of corrective actions. Sustaining correct check outcomes depends on QC and QA implementation.

  • Documentation and Document Holding

    Thorough documentation and report protecting are basic to demonstrating regulatory compliance. Laboratories should keep detailed information of all testing actions, together with specimen info, check outcomes, QC knowledge, personnel coaching, and gear upkeep. These information have to be readily accessible for inspection by regulatory companies. As an example, a doctor’s workplace performing CLIA-waived influenza testing (87651) should keep information of all exams carried out, QC outcomes, and personnel coaching to reveal compliance with CLIA necessities. With out correct documentation, compliance can’t be verifed.

These sides of regulatory compliance are intrinsically linked to the proper utility of CPT code 87651 and its CLIA waiver standing. Strict adherence to those rules ensures the accuracy, reliability, and high quality of diagnostic testing, safeguarding affected person security and selling efficient public well being interventions. Non-compliance, alternatively, can result in severe penalties, together with fines, sanctions, and potential hurt to sufferers. Due to this fact, a complete understanding of and dedication to regulatory compliance is crucial for all entities concerned in performing diagnostic testing underneath CPT code 87651.

Steadily Requested Questions

This part addresses widespread inquiries concerning the CLIA waiver standing of diagnostic exams using CPT code 87651, which pertains to infectious agent detection by amplified probe approach.

Query 1: What does CPT code 87651 particularly signify?

CPT code 87651 designates laboratory evaluation involving the detection of infectious brokers utilizing amplified probe strategies. This typically refers to molecular assays, similar to PCR or different amplification strategies, used to determine particular pathogens, usually respiratory viruses.

Query 2: Does CPT code 87651 routinely suggest a CLIA waived check?

No, CPT code 87651 doesn’t routinely point out a CLIA waived check. The CLIA waiver standing is determined by the precise check’s complexity and adherence to regulatory standards established by the Facilities for Medicare & Medicaid Providers (CMS).

Query 3: How can one decide if a check utilizing CPT code 87651 is CLIA waived?

The definitive supply for figuring out CLIA waiver standing is the official record maintained by the CMS. The precise check’s producer and product identify needs to be cross-referenced with this record to substantiate its eligibility for a CLIA waiver.

Query 4: What elements affect a check’s CLIA waiver eligibility underneath CPT code 87651?

Key elements embrace the check’s complexity, the variety of procedural steps, the extent of coaching required to carry out the check, the diploma of subjective interpretation concerned, and the potential for errors. Simplified, automated assays with minimal danger of error usually tend to be CLIA waived.

Query 5: What are the implications if a check utilizing CPT code 87651 is NOT CLIA waived?

If a check just isn’t CLIA waived, it have to be carried out in a laboratory that meets particular CLIA necessities, together with stringent high quality management measures, personnel {qualifications}, and infrastructure. This restricts the check’s accessibility and might enhance turnaround time for outcomes.

Query 6: Why is it essential to confirm the CLIA waiver standing of a check utilizing CPT code 87651?

Verification of CLIA waiver standing is essential for regulatory compliance. Performing a non-waived check in an unauthorized setting may end up in penalties, sanctions, and potential hurt to sufferers attributable to inaccurate outcomes.

In abstract, figuring out whether or not a check using CPT code 87651 is CLIA waived necessitates a evaluate of the CMS official record. Evaluation is required as this CPT code doesn’t, by itself, signify a CLIA-waived assay.

This understanding is important when contemplating diagnostic exams, making certain alignment with regulatory tips and sustaining high quality in affected person care.

Important Issues

This part gives essential steering for laboratories and healthcare suppliers in search of to make the most of exams coded as 87651, specializing in navigating CLIA waiver rules.

Tip 1: All the time Seek the advice of the CMS Official Record: Earlier than implementing any check coded as 87651, rigorously confirm its CLIA waiver standing on the official CMS web site. This record is the authoritative supply, and a check’s standing can change over time.

Tip 2: Perceive the Take a look at’s Complexity: Even when a check is listed as CLIA waived, totally perceive the steps concerned. Guarantee personnel are adequately educated to carry out the check accurately, minimizing the danger of errors.

Tip 3: Implement Strong High quality Management Measures: No matter CLIA waiver standing, adhere to strict high quality management protocols. Common calibration of kit, use of management samples, and meticulous record-keeping are important for dependable outcomes.

Tip 4: Keep Correct Documentation: Full and correct documentation is essential for regulatory compliance. Hold detailed information of all exams carried out, high quality management outcomes, and personnel coaching.

Tip 5: Monitor for Updates to Rules: CLIA rules and tips are topic to vary. Keep knowledgeable about updates from CMS to make sure ongoing compliance. Subscribe to related mailing lists and take part in persevering with education schemes.

Tip 6: Scrutinize Producer Directions: Adherence to producer directions is non-negotiable. Deviations from these directions can compromise the validity of the check and result in regulatory violations.

These issues present a foundational method to navigating CLIA necessities associated to code 87651. Diligent consideration to those areas can mitigate dangers related to diagnostic testing.

With the factors lined right here, laboratories and healthcare services can guarantee acceptable implementation of amplified probe diagnostic testing.

Figuring out CLIA Waiver Standing for Code 87651

The previous evaluation has demonstrated that the designation “is 87651 a clia waived check” can’t be universally affirmed. The task of this CPT code to a diagnostic assay doesn’t inherently suggest a CLIA waiver. As a substitute, the precise check’s complexity, as evaluated by the Facilities for Medicare & Medicaid Providers (CMS), dictates its eligibility for such a waiver. The CMS Official Record stays the authoritative useful resource for verifying the waiver standing of particular person exams falling underneath this code.

Given the important function of correct diagnostic testing in affected person care and public well being, stakeholders should prioritize regulatory compliance. Diligent verification of CLIA waiver standing, adherence to producer directions, and rigorous high quality management measures are important. As diagnostic applied sciences evolve, steady monitoring of regulatory updates and diligent evaluation of check complexity will likely be required to make sure the suitable and protected utility of amplified probe assays for infectious agent detection.