5-Hydroxyindoleacetic Acid (5-HIAA) BioAssay ELISA Kit is a competitive inhibition enzyme immunoassay technique for the in vitro quantitative measurement of 5-HIAA in serum, plasma, urine, cerebrospinal fluid and other biological fluids.Detection Range:4.94-400ng/mlSensitivity:1.95ng/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.