Globulin
Stomach and gut healthAlso known as: total globulin, serum globulin
Globulin is a group of proteins in the blood that includes immunoglobulins (antibodies), transport proteins, and complement proteins.
It is calculated by subtracting albumin from total protein. The albumin-to-globulin ratio helps assess liver function, kidney health, immune system activity, and nutritional status.
Reference range
Source: Ahead Health benchmark
Reference ranges may vary between labs and assays. Always interpret results with your healthcare provider.
Why this matters
Globulin levels reflect immune function, inflammatory status, and liver health. Elevated globulins indicate active immune response from infections, autoimmune diseases, chronic inflammation, or certain cancers like multiple myeloma. Low levels suggest immunodeficiency, protein loss, or severe liver dysfunction.
How this connects to other biomarkers
- Elevated Globulin with low Albumin/Globulin (A/G) Ratio points to widespread inflammation, autoimmune disease, or a monoclonal gammopathy (a single abnormal antibody-producing clone) — clarify with Immunofixation / Immunotyping and individual immunoglobulin levels (Immunoglobulin G, Immunoglobulin A, Immunoglobulin M).
- Low Globulin suggests an immune deficiency (e.g. common variable immunodeficiency, CVID) or selective protein loss.
How often should I test Globulin?
Most adults benefit from yearly globulin testing alongside total protein and albumin, as part of standard screening. Persistent elevation prompts your clinician's follow-up rather than a fixed retest cadence.
At baseline / for screening: Once every 12 months from age 30 as part of a comprehensive panel. More frequently, every 3 to 6 months, if you have known liver disease, regular alcohol intake, fatty liver (MASLD), or take hepatotoxic medication.
When monitoring an intervention or change: Persistent elevation typically prompts clinician follow-up rather than a fixed retest cadence. Mild elevations from acute infection or recent illness often normalize once those resolve, so retest at 3 months in that situation. After starting treatment for an inflammatory or immune condition, your clinician guides the follow-up.
Note: Acute infection and recent vaccination can transiently raise globulins. Wait 4 to 6 weeks after illness or vaccination before reading the value as a stable inflammatory or immune marker.
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