BEUDAMED
    FDA Adverse Event Malfunction Summary report: N

    INRATIO

    MDR report key: 795649 · Received December 8, 2006

    Report

    Report Number
    2954730-2006-00601
    Event Type
    Malfunction
    Date Received
    December 8, 2006
    Date of Event
    November 22, 2006
    Report Date
    December 5, 2006
    Manufacturer
    HEMOSENSE, INC.
    Product Code
    JPA
    Product Problem
    Yes
    Report Source
    Manufacturer report
    Reporter Occupation
    UNKNOWN

    Narratives

    Additional Manufacturer Narrative · 1

    INRATIO PRECISION DATA PROVIDED BY END-USER LOT 060452: 11/10/06; FIRST TEST INR = 5.5; SECOND TEST INR = 4.6; THIRD TEST INR=4.3; MEAN = 4.8 ; SD = 0.62; %CV = 13%. THE %CV IS LESS THAN OR EQUAL TO 20%. PER INTERNAL PROCEDURE, THE PRECISION PASSES THE CRITERIA FOR PRECISION. THE TEST IS CONSIDERED PRECISE AND NO FURTHER TESTING IS REQUIRED AT THIS TIME. INRATIO PRECISION DATA PROVIDED BY END-USER LOT 060452: FIRST TEST INR = 5.0; SECOND TEST INR = 5.4; THIRD TEST INR=5.3; MEAN = 5.2 ; SD = 0.2; %CV = 3.9%. THE %CV IS LESS THAN OR EQUAL TO 20%. PER INTERNAL PROCEDURE, THE PRECISION PASSES THE CRITERIA FOR PRECISION. THE TEST IS CONSIDERED PRECISE AD NO FURTHER TESTING IS REQUIRED AT THIS TIME. DISCREPANT RESULTS (ACCURACY) COMPARISON OF INRATIO TEST WITH LAB RESULTS PROVIDED BY END-USER AT TIME COMPLAINT WAS FILED: INRATIO 5.0, 5.4, 5.3; LAB 3.8, 3.8, 3.8; MEAN 4.4, 4.6, 4.55; CONFIDENCE LIMITS 2.5-6.5, 2.6-6.9, 2.6-6.9. PER INTERNAL PROCEDURE, THE MEAN OF THE INRATIO METER AND COMPARATIVE SYSTEM INR WERE CALCULATED. BOTH INRATIO AND LAB VALUES ARE WITHIN THE CONFIDENCE LIMITS FOR INR TESTING. THE RESULTS ARE NOT CONSIDERED DISCREPANT WITHIN THE CONTEXT OF THE DOCUMENTED VARIABILITY FOR INR TESTING. THEREFORE, FURTHER TESTING IS NOT REQUIRED AT THIS TIME.

    Description of Event or Problem · 1

    CALLER ALLEGED IMPRECISION WITH INRATIO. RESULTS AS FOLLOWS: 2006, FIRST TEST INR = 5.5; SECOND TEST INR = 4.6; THIRD TEST INR=4.3; ELEVEN DAYS LATER. FIRST TEST INR = 5.0; SECOND TEST INR = 5.4; THIRD TEST INR=5.3; CALLER ALLEGED DISCREPANT RESULTS COMPARED WITH THE LAB. RESULTS AS FOLLOWS: INRATIO 5.0, 5.4, 5.3 LAB 3.8, 3.8, 3.8.

    Devices

    Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
    1 INRATIO PROTHROMBIN TIME TEST JPA HEMOSENSE, INC. * 060452

    Patients

    Seq Age Sex Outcome Treatment
    1 *