Amylase (Urine)

This test is used to find out whether you have pancreatitis or another pancreas-related disorder.

Amylase (Blood)

This test measures the level of the enzyme amylase in your blood. Amylase levels in your blood rise when your pancreas or your salivary glands are inflamed.

Amphetamine Screen (Urine)

This test detects the presence of amphetamine in your urine. This drug can show up in your urine long after you've taken it.

Ammonia

This test checks the amount of ammonia in your blood. Ammonia may build up in your body if you have kidney or liver failure.

ALT

This test measures the amount of a certain enzyme in your blood. High levels are a sign of liver damage.

Alpha-Fetoprotein (Maternal Blood)

If you are pregnant, this test looks for a fetal substance called alpha-fetoprotein in your blood. Higher levels of AFP may mean your fetus has a birth defect.

Alpha-1 Antitrypsin

This test checks to see if a liver disorder or lung disease is caused by a genetic disorder called alpha-1 antitrypsin deficiency.

Alkaline Phosphatase

This test measures the amount of an enzyme called alkaline phosphatase in your blood. It can help your doctor diagnose certain liver conditions.