FDA Adverse Event Malfunction Summary report: N

INRATIO

MDR report key: 724690 · Received June 6, 2006

Report

Report Number
2954730-2006-00335
Event Type
Malfunction
Date Received
June 6, 2006
Date of Event
May 30, 2006
Report Date
June 2, 2006
Manufacturer
HEMOSENSE, INC.
Product Code
JPA
Product Problem
Yes
Report Source
Manufacturer report
Reporter Occupation
UNKNOWN

Narratives

Additional Manufacturer Narrative · 1

DISCREPANT RESULTS (ACCURACY) COMPARISON OF INRATIO TEST WITH LAB RESULTS PROVIDED BY END-USER AT TIME COMPLAINT WAS FILED: SEE SCANNED TABLE. PER INTERNAL PROCEDURE, TR 0150, THE CALCULATED 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. INRATIO PRECISION DATA PROVIDED BY END-USER LOT 060090: 05/30/06, FIRST TEST INR =3.5, SECOND TEST INR = 2.9, MEAN = 3.2; SD = 0.42; % CV = 13%. THE % CV IS LESS THAN OR EQUAL TO 20%. PER INTERNAL PROCEDURE, TR 0150, THE PRECISION PASSES THE CRITERIA FOR PRECISION. THE TEST IS CONSIDERED PRECISE AND NO FURTHER TESTING IS REQUIRED AT THIS TIME.

Description of Event or Problem · 1

CALLER ALLEGED DISCREPANT RESULTS WITH THE LAB. RESULTS AS FOLLOWS: SEE SCAN TABLE. INRATIO PRECISION DATA PROVIDED BY END-USER LOT 060090: 05/30/06, FIRST TEST INR = 3.5, SECOND TEST INR =2.9.

Devices

Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
1 INRATIO PROTHROMBIN TIME TEST JPA HEMOSENSE, INC. 060090

Patients

Seq Age Sex Outcome Treatment
1 YR