Doctors can check liver function using a blood test called the liver panel, explains Lab Tests Online. The liver panel measures the amounts of bilirubin, albumin, total protein and liver enzymes in the blood, reports WebMD.
Doctors often order a liver panel when a patient has jaundice, fatigue, persistent vomiting or other symptoms of liver disease, explains WebMD. The test is used to diagnose cirrhosis, acute liver damage, alcoholic hepatitis and other problems with the liver, states Lab Tests Online. The liver panel is also used to measure liver function in people who take medications that can affect the liver. A patient with abnormal results may need to try a different drug or take a different dosage of his current medication.