For the quantitative measurement of insulin in serum and plasma with a range of 0.9 - 220 mU/L and an assay time of 2h 30min. The kits have ~100% cross-reactivity with insulin analogues, while having virtually no cross-reactivity with other markers such as c-peptide, proinsulin, and rodent insulin. The kits also have a higher sensitivity than competitor kits while maintaining a wide range (0.9 - 220 ng/mL), allowing customers to run low and high range samples with one kit.