Alere San Diego, Inc.: INRatio Prothrombin Time (PT) Monitoring System Model Number: 0100007 Product Usage: The INRatio Prothrombin Time Monitoring System uses a modified version of the one-stage PT test. After a drop of blood is applied to the test strip, it is drawn into the test area and mixed with reagents that cause coagulation to begin. The test strip area on the test strip is separated into three channels, each of which contains electrodes for detection of the blood clot. One channel contains the reagents to perform the Prothrombin time test on the blood sample. The other two channels contain the reagents. to perfom the Prothrombin time test on the blood sample. The other two channels contain the reagents to run control tests. No external quality control test are required for the INRatio System. The meter monitors the reactions, and calculates the PT and INR for the blood sample, which are reported on the display. If the control results are not within a set range, it indicates a problem with the test and an error message is reported on the display instead of a result.

Recall number

Z-2355-2016

Recalling firm

Alere San Diego, Inc.

Product

INRatio Prothrombin Time (PT) Monitoring System Model Number: 0100007 Product Usage: The INRatio Prothrombin Time Monitoring System uses a modified version of the one-stage PT test. After a drop of blood is applied to the test strip, it is drawn into the test area and mixed with reagents that cause coagulation to begin. The test strip area on the test strip is separated into three channels, each of which contains electrodes for detection of the blood clot. One channel contains the reagents to perform the Prothrombin time test on the blood sample. The other two channels contain the reagents. to perfom the Prothrombin time test on the blood sample. The other two channels contain the reagents to run control tests. No external quality control test are required for the INRatio System. The meter monitors the reactions, and calculates the PT and INR for the blood sample, which are reported on the display. If the control results are not within a set range, it indicates a problem with the test and an error message is reported on the display instead of a result.

Status

Terminated

Initiated

2016-07-11

Posted

2016-08-19

Terminated

2017-07-20

Reason

Alere San Diego is initiating a voluntary recall for the Alere INRatio/INRatio2 PT/INR Monitoring Systems (Test Strips and Meters). This action is being initiated as a result of patients who had a therapeutic or near-therapeutic INR with the Alere INRatio/INRatio2 PT/INR Monitoring System but a significantly higher INR (outside of therapeutic range) when performed by a central laboratory.

Root cause

Other

Action

Alere issued a press release on July 11, 2016. An Urgent Medical Device Letter dated July 26, 2016 was sent to affected customers on July 29, 2016. The letter identified the affected product, problem and actions to be taken. The letter instructed customers to consult with their healthcare provider as soon as possible to transition to an alternate method of PT/INR testing and to contact the firm regarding return or disposal of unused product and obtaining device replacement from a different manufacturer. For questions contact the Alere INRatid1 Recall Hotline at 1-866-723-2535.

Quantity

not on file

Distribution

Worldwide Distribution - US Nationwide and foreign distribution to the countries of: Argentina, Australia, Azerbaijan, Bangladesh, Belarus, Belgium, Brazil, Brunei Daruss, Canada, Chile, China, Colombia, Egypt, France, Hong Kong, India, Indonesia, Israel, Italy, Japan, Kazakhstan, Malaysia, Maldives, Netherlands, Russia, Rwanda, Singapore, South Africa, South Korea, Spain, Taiwan, Thailand, Trinidad, Ukraine, Uruguay, and Vietnam.

Lot, serial or model codes

All Lots All Serial Numbers

510(k) numbers

["K020679"]

PMA numbers

not on file

Product code

GJS

Firm FEI

1000125596

Firm city

San Diego

Firm state

CA

Firm country

not on file

Cite as

FDA Medical Device Recalls (openFDA) (U.S. Food and Drug Administration (openFDA)), device-recall-0001-of-0001.json.zip, sha256 b87518bfe2e8, published 2026-09-28

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