[Skip to Content]
Access to paid content on this site is currently suspended due to excessive activity being detected from your IP address Please contact the publisher to request reinstatement.
[Skip to Content Landing]
Citations 0
Editor's Correspondence
May 26, 2003

Apparent Warfarin Potency Inconsistencies Compromise Effectiveness

Author Affiliations

Copyright 2003 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2003

Arch Intern Med. 2003;163(10):1243. doi:10.1001/archinte.163.10.1243-a

An alternative message can perhaps be derived from the article by Meyer et al.1 The article documents that INR was outside therapeutic range in 59% of patients receiving warfarin. The inference is that appropriate levels of anticoagulation control were not achieved in almost half. Is this acceptable? Is there a problem with the paradigm or is medication potency undependable?