Bilrubin (Indirect and Unconjugated) >95%

Purified unconjugated (indirect) bilirubin antigen for research and immunoassay development, supplied by Antibodies.com as a lyophilized powder at greater than 95% purity. This 25 mg preparation supports conjugation to carrier proteins, calibration of clinical chemistry assays, and use as a reference standard in studies of heme catabolism and hepatic function.

The lyophilized format offers reconstitution flexibility for laboratory workflows and supports long-term storage when protected from light, given the known photosensitivity of the tetrapyrrole. Unconjugated bilirubin represents the lipid-soluble form generated from heme breakdown prior to hepatic glucuronidation, making this antigen relevant to investigations of neonatal hyperbilirubinemia, hemolytic disorders, and jaundice pathophysiology.

As a research-use antigen, the preparation is commonly used in the development of anti-bilirubin antibodies and in competitive immunoassay formats. Each vial should be handled under standard cold-chain practices and reconstituted with an appropriate aqueous buffer immediately before use.