5-Methyltetrahydrofolate Homocysteine Methyltransferase (MTR) BioAssay ELISA Kit (Human) is a sandwich enzyme immunoassay for in vitro quantitative measurement of MTR in human tissue homogenates and other biological fluids.Detection Range:0.312-20ng/mlSensitivity:0.115ng/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.