Alere San Diego recalled the Alere INRatio2 PT/INR Professional Test Strips because the results disagreed with the confirmed PT/INR reference test results performed by a central laboratory. The firm began investigating due to complaints of patients who had a therapeutic or near-therapeutic INR result with the Alere INRatio2 PT/INR Professional Test Strip but a significantly higher INR result (outside of therapeutic range) when re-testing was performed by a central laboratory because of deterioration in the patient’s clinical condition. The firm received nine reports of malfunctions, six injuries and three deaths, caused by bleeding.
The Alere lNRatio2 PT/INR Monitoring System (Professional Use) is used for quantitative determination of international normalized ratio (INR) in fresh, capillary whole blood to monitor the effect of warfarin on clotting time (prothrombin time). The Alere INRatio2 PT/INR Monitoring System (Professional Use) is intended for use outside of the body (in vitro diagnostic use).
The Alere INRatio2 PT/INR Professional Test Strips are part of the Alere lNRatio2 PT/INR Monitoring System (Professional Use) which also consists of the INRatio2 Monitor. This recall is expected to cause a shortage of test strips for the Alere INRatio2 professional PT/INR testing.
Alere will transition customers from the current Alere INRatio2 PT/INR Professional Test Strip (PN 99008G2) to the Alere INRatio PT/INR Test Strip (PN 100139) because the Alere INRatio PT/INR Test Strip is not affected by this recall. The affected test strips were manufactured from August 22, 2013, through April 2, 2014, and distributed from August 26, 2013, through April 2, 2014.
The FDA has classified this recall as a Class I recall, which is the most serious type of recall. Class I recalls involve situations in which there is a reasonable probability that use of the product will cause serious adverse health consequences or death.
See the Recall
See also Medical Law Perspectives, December 2013 Report: Thicker Than Water: Liability When Blood Clots Cause Injury or Death