CLIA Testing - Ccma

1. Identify the correct action if the first drop of capillary blood is used for glucose testing.

   Wipe away the first drop, then collect the next drop per meter IFU. The first drop often contains tissue fluid that can dilute the sample, affecting glucose measurement accuracy.

2. Identify the correct action if a point-of-care instrument displays an error code during testing.

   Stop; follow IFU troubleshooting; repeat test only after resolving the error. Error codes indicate instrument issues, and resolution via troubleshooting restores reliability for accurate testing.

3. What is the correct action if a QC vial is expired but was used to run controls?

   Invalidate the QC; repeat QC with in-date controls; do not report patient results. Expired controls may not reliably assess test performance due to potential degradation, invalidating the quality check.

4. What is the main purpose of quality control (QC) in CLIA-waived testing?

   To verify the test system is functioning properly before reporting results. Quality control confirms the reliability and accuracy of the testing system, preventing erroneous patient results.

5. What is the correct action when external controls are out of range or incorrect?

   Do not report patient results; troubleshoot and repeat QC before testing. Incorrect controls signal potential system malfunctions, requiring resolution to maintain result integrity.

6. Which two categories of QC are commonly used for waived tests (when applicable)?

   Internal control and external (liquid) control. Internal controls are built into the test device, while external controls use known samples to validate overall test performance.

7. Which bloodborne pathogen practice is required when handling blood specimens for waived tests?

   Standard Precautions (treat all blood/body fluids as potentially infectious). Standard Precautions minimize infection risk by assuming all specimens could transmit pathogens.

8. Which action is appropriate if a waived test result is inconsistent with patient symptoms?

   Repeat testing and/or refer for confirmatory testing per policy and provider order. Discrepancies may indicate false results, requiring verification to guide appropriate clinical decisions.

9. What is the correct disposal method for used lancets and capillary devices?

   Immediately into an approved sharps container. Immediate sharps disposal complies with safety regulations to prevent needlestick injuries and biohazard exposure.

10. What is the correct reporting approach for waived test results with qualitative outcomes?

    Report exactly as instructed (for example: positive, negative, invalid). Precise terminology aligns with test validation and prevents miscommunication in clinical reporting.

11. What is the correct response if the specimen type does not match the test IFU?

    Reject the specimen and recollect using the required specimen type. Mismatched specimen types can lead to inaccurate results, as tests are validated only for specific sample matrices.

12. What does a QC log document for CLIA-waived testing?

    Date/time, test system, lot/exp, QC results, operator, and corrective actions. Comprehensive logging ensures traceability, compliance, and quality assurance in testing processes.

13. Which event typically requires running external controls on a waived test (if available)?

    New lot/shipment, new operator, after maintenance, or when results are questionable. These triggers ensure ongoing validation of test accuracy amid changes in materials, personnel, or performance concerns.

14. Which step is required when using a glucose meter that requires coding or calibration?

    Verify correct code/calibration for the strip lot before patient testing. Proper calibration aligns the meter with the strip lot's characteristics for accurate result interpretation.

15. Which identification elements must be confirmed before performing any waived test?

    Correct patient identity and correct ordered test. Verification of these elements prevents misidentification errors and ensures the test aligns with clinical needs.

16. What is the correct site preparation for a fingerstick glucose test before puncture?

    Clean with antiseptic and allow to air-dry completely. Antiseptic cleaning reduces contamination, and air-drying prevents sample dilution or interference.

17. Identify the correct action if the internal control line on a rapid test is absent.

    Invalid result; do not report; repeat with a new device and new specimen if needed. Absence of the control line signifies a procedural or device failure, rendering the result unreliable and requiring retesting.

18. Which statement best defines an analytic error caused by timing in waived testing?

    Reading results too early or too late relative to the IFU time window. Deviating from the specified timing can alter reaction development, leading to misinterpretation of results.

19. Which document is the primary authority for performing a CLIA-waived test correctly?

    The manufacturer's Instructions for Use (package insert/IFU). This document provides authoritative, detailed guidelines from the manufacturer to ensure accurate, safe, and compliant test performance.

20. Identify the correct action if a rapid test is read after the IFU maximum read time.

    Do not report; treat as invalid and repeat per IFU with a new device. Results observed outside the validated time frame may reflect unstable reactions, compromising accuracy.

21. What does an internal control on a rapid test device primarily indicate?

    The test ran correctly (sample flow/reagent integrity) for that device. Internal controls confirm proper procedural execution, including sample migration and reagent functionality within the specific test device.

22. Which action is required before testing if a CLIA-waived kit is past its expiration date?

    Do not use it; discard per policy and obtain an in-date kit. Expired kits contain potentially degraded reagents that could compromise test accuracy and reliability.

23. What storage principle must be followed for CLIA-waived reagents and test kits?

    Store exactly as specified in the IFU (temperature, light, humidity, position). Adhering to manufacturer-specified conditions preserves reagent stability and ensures test validity.

24. Which practice best prevents cross-contamination during point-of-care waived testing?

    Change gloves as needed and use a new pipette/swab/device for each patient. Using fresh protective and testing equipment per patient minimizes the transfer of contaminants between samples.

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