This item MFG by HYPHEN BioMed and Dis. by Aniara Diagnostics. CEPHEN 1 APTT Reagent. Reagent for the determination of Activated Partial Thromboplastin Time (APTT) in human citrated plasma, ready to use liquid. Lupus Anticoagulant Resistant. 6vials x 2.5 mL. 6x25 Tests.