APTT Si L Minus kit is intended for carrying out clot based haemostasis assays. For use in the determination of activated partial thromboplastin times (aPTT), and related coagulation procedures using phospholipid extract and a near-colloidal particle activator. The test system can be used on manual, semi-automated and automated methods. The kit contains: 5 x 5 ml APTT Si L Minus + 5 x 5 ml CaCl2. CE/IVD Marked.