For blood collection tubes whose method of anticoagulation is through direct thrombin inhibition, BAPA tubes have been cleared for use with the TTAS01 system.

Hirudin Blood Tube is a blood collection tube for use in platelet aggregation studies with the Multiplate® platelet function analyzer to evaluate qualitative platelet disorders at physiological calcium conditions. Hirudin, a thrombin inhibitor allows anticoagulation of blood without interference with physiological calcium levels.