Diagnostic Lab Tests

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We have more than 100 Riordan Diagnostic Lab Tests, profiles and panels to meet your specific testing needs.

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Histamine Test

  • Histamine Test

    Histamine is a reactive amine. Most histamine is found in platelets, tissue mast cells and basophils. Basophils are probably the source of most blood histamine. Histamine is a major neurotransmitter in the brain, especially in the hippocampus and throughout the autonomic nervous system. The ...
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