The Ansh Labs' PAPP-A2 ELISA kit is a quantitative three-step sandwich immunoassay. It utilizes standardized recombinant human PAPP-A2 calibrators. The antibodies are highly specific and do not detect proMBP, dimeric PAPP-A, or PAPP-A-proMBP complex. Analytical measureable range of 0.19 - 16 ng/mL allows for studies in a variety of physiological states. Sensitive to 0.71 ng/mL. Total 2.5 hour incubation at room temperature. Long shelf life of 24 months. For Research Use Only within the United States. Ansh Labs, located just south of Houston Texas, is an FDA registered manufacturer of diagnostic test kits, antibodies, antigens, and proteins.