Platelet Factor 4 (PF4) BioAssay ELISA Kit (Rabbit) is a sandwich enzyme immunoassay for in vitro quantitative measurement of PF4 in rabbit plasma .Detection Range:0.156-10ng/mlSensitivity:0.054ng/mlStorage and Stability:Desiccation recommended. The Standard, Detection Reagent A, Detection Reagent B and the 96-well strip plate should be stored at -20°C upon receipt. Store all other reagents at 4°C. Stable for 6 months after receipt of order.