Von Willebrand Factor (vWF) BioAssay ELISA Kit (Rat) is a sandwich enzyme immunoassay for in vitro quantitative measurement of vWF in rat plasma.Detection Range:12.5-800pg/mlSensitivity:4.4pg/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.