Arbor Assays The founders and top scientists from Arbor Assays have been researching and developing high quality assay kits since 1982. They grew up making FDA-regulated in vitro diagnostic products for human disease detection. When they started to make products for the life sciences market in 1991 they realised that sensitivity, speed, convenience, quality and service were not associated with these products. They changed that for you. View All Arbor Assays Products New Product!Arg8-Vasopressin (AVP) ELISA KitFurther Info! CORTISOL ASSAYSWhy are there so many species-species Cortisol Assays?Further Info! Top Sellers! Cortisol ELISA Kit (1 Strip plate) Corticosterone ELISA Kit (1 Plate) Urea Nitrogen (BUN) Detection Kit (2 Plate) Progesterone ELISA Kit (1 Plate) Testosterone ELISA Kit (1 Plate) Estrone-3-Glucuronide (E1G) ELISA Kit (1 Plate) Prostaglandin E2 (PGE2) Multi-Format ELISA Kit (1 Plate) 2'3'-Cylic GAMP ELISA Kit, (1 Plate)