Serum or plasma concentration of bile acids (total)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like abdominal pain, jaundice (yellowing of skin/eyes), unexplained fatigue, or if they suspect liver disease, gallbladder problems, or bile duct blockages. It can also be part of routine liver function evaluations or investigations into unexplained digestive issues.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if it’s part of a liver function panel. Bring any medications you’re taking, as some (like certain antibiotics or cholesterol drugs) might affect results. Avoid alcohol for 24 hours before testing.

What the Test Involves

A blood sample will be drawn from a vein in your arm by a healthcare professional. The sample is then sent to a lab for analysis. The test measures the total concentration of bile acids in your serum or plasma.

What the Results Mean

Results are typically reported in micrograms per deciliter (µg/dL) or milligrams per deciliter (mg/dL). Elevated levels may indicate liver disease, bile duct obstruction, or other conditions affecting bile flow. Lower-than-expected levels could suggest rare metabolic disorders or errors in bile acid synthesis.