Cholic Acid-24-13C

**Semantic type:** Pharmacologic Substance

**Definition:** A preparation of carbon C 13-labeled cholic acid with potential diagnostic applications. Upon intravenous administration, cholic acid-24-13C levels may be used to measure first pass hepatic extraction of cholate, which is influenced primarily by portal blood flow and portal-systemic shunt.

**Synonyms:** - 24-13C Cholate - Carbon C 13 Cholic Acid