Immune system testing on BiomarkersLabs covers full lymphocyte subset panels (CD4, CD8, CD19, CD56, NK), quantitative immunoglobulins (IgG, IgA, IgM, IgE), IgG subclasses, complement C3/C4, secretory IgA and natural killer cell function — the full reference surface for immunodeficiency and immune dysregulation.
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What's in this catalog
Each test reference page covers what the test measures, when practitioners typically order it, sample type and turnaround, lab partner, and clinical interpretation guidance. Reference pages are written for licensed practitioners — clinical depth without consumer-facing language.
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For licensed practitioners
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