Description of target: Broad specificity oxidoreductase that catalyzes the NADPH-dependent reduction of a variety of flavins, such as riboflavin, FAD or FMN, biliverdins, methemoglobin and PQQ (pyrroloquinoline quinone). Contributes to heme catabolism and metabolizes linear tetrapyrroles. Can also reduce the complexed Fe3+ iron to Fe2+ in the presence of FMN and NADPH. In the liver, converts biliverdin to bilirubin.;Species reactivity: Rabbit;Application: ;Assay info: Assay Methodology: Quantitative Sandwich Immunoassay;Sensitivity: < 1.8 ng/mL