FDA: Don’t Use Certain Test Strips to Monitor Blood Thinner Dosing

The Food and Drug Administration recently warned physicians and patients who use medical devices to monitor levels of the blood thinner warfarin that certain test strips used with the devices may provide inaccurate results and should not be relied on to adjust the drug dosage. The CoaguChek XS PT Test Strips were manufactured by Roche and distributed by Terrific Care/Medex Supply. They include catalog numbers for test strips that were excluded from a recent Roche recall because they were not labeled or authorized for sale in the U.S. However, Terrific Care/Medex Supply purchased the Roche test strips from an unknown source and imported and sold them in the U.S., FDA said.

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