Liver Function and Impairment Screen with Reflex to Additional Tests

What This Test Measures

The initial panel typically includes tests for liver enzymes (e.g., alanine aminotransferase, aspartate aminotransferase) and bilirubin, which reflect liver function and injury. If abnormalities are detected, the reflex portion may include additional tests like albumin, hepatitis markers, or fat-soluble vitamin levels to clarify concerns.

Why It’s Ordered

Doctors may order this test if you have symptoms like jaundice (yellow skin), fatigue, abdominal pain, or if you have risk factors for liver disease (e.g., alcohol use, hepatitis exposure, or metabolic conditions). It’s also used in routine check-ups for people with chronic conditions affecting the liver.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before drawing blood if certain components of the reflex panel require it. Bring any medications or supplements you’re taking to discuss with your provider.

What to Expect During the Test

A healthcare professional will insert a small needle into a vein in your arm to draw blood. You may feel a brief pinch, but it’s quick and shouldn’t cause significant discomfort. The process typically takes a few minutes.