The effect of freezing and thawing of samples for anti‐factor Xa testing for the determination of enoxaparin activity.

Abstract

The quality and validity of laboratory results, especially for coagulation analyses, are influenced by pre-analytical variables including the collection technique, transportation, pre-analytical processing and storage of samples. Laboratory networks often rely on centralization of specialized testing, which necessitates on-site preparation of samples and transportation to referral centres. Low molecular weight heparin (LMWH) offers improved clinical predictability of anticoagulation and often does not require routine monitoring.