Surreptitious Ingestion of Warfarin

Abstract

Surreptitious ingestion of anticoagulant drugs is a rare condition which presents as an obscure bleeding tendency associated with gross depletion of the vitamin K dependent factors (factors II, VII, IX and X). In all previously reported cases the patients have denied taking drugs but chemical analysis of the plasma has shown the presence of members of the coumarin or indanedione groups.