BEUDAMED
    FDA Adverse Event Malfunction Summary report: N

    INRATIO

    MDR report key: 2050393 · Received April 4, 2011

    Report

    Report Number
    2027969-2011-00691
    Event Type
    Malfunction
    Date Received
    April 4, 2011
    Date of Event
    March 7, 2011
    Report Date
    April 4, 2011
    Manufacturer
    ALERE SAN DIEGO, INC
    Product Code
    GJS
    PMA / PMN Number
    021923
    Removal / Correction Number
    NI
    Product Problem
    Yes
    Report Source
    Manufacturer report
    Reporter Location
    ID, US
    Reporter Occupation
    NOT APPLICABLE

    Narratives

    Additional Manufacturer Narrative · 1

    DISCREPANT RESULTS (ACCURACY) COMPARISON OF INRATIO TEST WITH LAB RESULTS PROVIDED BY END-USER AT TIME COMPLAINT WAS FILED: INRATIO: 0.9, REFERENCE: 2.4, MEAN: 1.65, CONFIDENCE LIMITS: 1.2-2.3. ANALYSIS OF CUSTOMER'S DATA REVEALED THAT INRATIO AND REFERENCE TEST RESULT COMPARISON DID NOT MEET ACCURACY CRITERIA. CUSTOMER'S RESULTS ARE CONSIDERED DISCREPANT BEYOND THE CONTEXT OF THE DOCUMENTED VARIABILITY FOR INR TESTING. NO PRODUCT IS EXPECTED TO BE RETURNED. RETAINED STRIP TESTING FROM A PREVIOUS CASE REVEALED THAT RESULT COMPARISONS MET ACCURACY CRITERIA. AS REVIEWED ON 04/04/2011, TEN DISCREPANT RESULT COMPLAINTS WERE REPORTED FOR LOT #240450, YIELDING A COMPLAINT RATE OF 0.002%. DUE TO THIS LOW OCCURRENCE RATE, BELOW THE ACTION THRESHOLDS MONITORED BY QA FOR CORRECTIVE ACTION (>0.07%), NO FURTHER ACTION IS REQUIRED AT THIS TIME. THIS ISSUE WILL BE SUBJECT TO TRACKING AND TRENDING. NO CORRECTIVE ACTION REQUIRED AT THIS TIME AS NO PRODUCT DEFICIENCY WAS ESTABLISHED. INVESTIGATION RESULTS FROM A PREVIOUS CASE ON STRIP LOT #240450: THE ALLOWABLE DIFFERENCE BETWEEN THE INRATIO INR'S AND SYSMEX INR'S WAS CALCULATED. AT LEAST TWO OUT OF THREE REPLICATES FOR BOTH SAMPLES OF STRIP LOT 240450 ARE WITHIN THE ALLOWABLE BIAS. NO DISCREPANT RESULTS WERE PRODUCED ON IN-HOUSE METERS. THESE MEET THE ABOVE CRITERIA. NO FURTHER ACTION IS REQUIRED.

    Description of Event or Problem · 1

    CALLER ALLEGED DISCREPANT RESULTS COMPARED WITH THE LAB. RESULTS AS FOLLOWS: DATE: (B)(6) 2011, INRATIO: 0.9, LAB: 2.4. PT'S THERAPEUTIC RANGE: 2.0-3.0 INR.

    Devices

    Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
    1 INRATIO PROTHROMBIN TIME TEST GJS ALERE SAN DIEGO, INC 100139 240450

    Patients

    Seq Age Sex Outcome Treatment
    1 NI