Cannabinoids are a class of diverse chemical compounds that activate cannabinoid receptors on cells that repress neurotransmitter release in the brain. They are active chemicals in Cannabis that cause drug-like effects throughout the body, including the central nervous system and the immune system. Anti-UR144/XLR11 is a sheep polyclonal IgG antibody. It has been used in a competitive ELISA format to test the presence of UR-144 and XLR-11 and their metabolites in samples such as urine, whole blood, serum, and plasma (see Arntson et al, 2013). Note: If this antibody is used in an immunoassay to detect synthetic cannabinoids, suspect test samples must be confirmed using an alternative analytical method, for example LC-MS-MS. Applications: Suitable for use in ELISA. Other applications not tested. Recommended Dilution: ELISA: 1-3ug/ml (for 96-well plate coating) Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.