Serum or plasma mass concentration of bile acids (total)

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like jaundice (yellowing of skin/eyes), abdominal pain, unexplained fatigue, or if they suspect liver disease, gallbladder issues, or bile duct blockage. It can also be part of routine liver function evaluations or before certain surgeries.

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 your blood is drawn early in the morning. Avoid eating fatty foods for a few hours beforehand if instructed.

How the Test Is Performed

A healthcare professional will draw blood from a vein in your arm using a small needle. You may feel a brief sting, but it usually doesn’t cause significant discomfort. The blood sample is then sent to a lab for analysis.

What the Results Mean

Elevated levels may suggest liver disease, bile duct obstruction, or other conditions affecting bile production or flow. Lower-than-normal levels could indicate malabsorption issues or certain metabolic disorders. Your results will be interpreted by your provider in the context of your overall health.