Introduction: It is recommended to use two chronometric assays of different principles for the diagnosis of lupus anticoagulant (LA), consisting in diluted Russell Viper Venom Time (dRVVT) and activated Partial Thromboplastin Time (aPTT). Yet, there are only a few integrated aPTT assays; this study aims to evaluate one of them: Cephen LS/Cephen (Hyphen Biomed).
Method: 249 samples of patients were included in this study.