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Thiopurine methyltransferase (TPMT)

  • Test
Thiopurine methyltransferase (TPMT) is an enzyme that breaks down a class of drugs called thiopurines. TPMT tests are used to identify people at risk of developing severe side effects from thiopurine treatment.
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Mercury Test

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Mercury is an element found in small quantities throughout the environment that can be toxic in various forms. Mercury testing is used to detect an excess amount of mercury in your blood and/or urine sample.
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MTHFR Mutation

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The MTHFR mutation test may sometimes be ordered when a person has elevated homocysteine levels, especially when the person has a personal or family history of premature cardiovascular disease or thrombosis.
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Histamine

  • Test
Histamine is released from activated mast cells, often in an allergic response. Histamine tests measure it in blood or urine to confirm that a person has had an anaphylactic reaction or to help diagnose mastocytosis.
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Arthritis Testing

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Arthritis is the leading cause of disability in the United States. Learn about types of arthritis and the role of arthritis testing.
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Intrinsic Factor Antibody

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An intrinsic factor antibody test can help determine the cause of a vitamin B12 deficiency and confirm a pernicious anemia diagnosis.
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Vitamin B12 Test

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Vitamin B12 keeps your blood cells and nervous system healthy. Testing B12 levels may reveal a deficiency that can cause serious health problems.
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