Overview
Lupus anticoagulant (LA) testing is performed using two screening tests: activated partial thromboplastin time (APTT) and diluted Russell's viper venom time. If one of the screening tests is positive, a confirmation test based on the same principle is performed.
The HUS Hematology Laboratory uses an integrated APTT for LA testing, consisting of a screening reagent: Cephen LS, and a confirmation reagent: Cephen (Hyphen Biomed).
The aim of this study is to determine whether another integrated activated partial thromboplastin time (APTT) test, Cryocheck HexLA, offers better performance than Cephen LS/Cephen, both in terms of sensitivity to lupus anticoagulant (LA) and susceptibility to interference from anticoagulant treatments.
Eligibility
Inclusion Criteria:
- Patient of legal age (≥ 18 years)
- Sample sent to the HUS Hematology Laboratory and analyzed for LA detection as part of routine care.
Exclusion Criteria:
\- Insufficient sample volume