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Alpha-Fetoprotein (Amniotic Fluid)
This test checks a sample of amniotic fluid. The sample can help tell if your baby has a birth defect called an open neural tube defect.
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Alpha-Fetoprotein Tumor Marker (Blood)
This test looks for a protein in your blood that may mean that you have liver cancer or one of several other cancers.
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ALT
This test measures the amount of a certain enzyme in your blood. High levels are a sign of liver damage.
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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.
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Bilirubin (Amniotic Fluid)
This test is done to see how well your baby is developing inside you.
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Amphetamine Screen (Blood)
This test measures the amount of a drug called amphetamine in your blood. The test is most often used to screen for drug abuse.
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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.
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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.
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Amylase (Urine)
This test is used to find out whether you have pancreatitis or another pancreas-related disorder.
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