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IgMmg/dL
IgM is the antibody class made first during a new infection.
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What IgM measures
IgM is the antibody class made first during a new infection.
If your IgM is low
IgM below the range is commonly associated with reduced antibody production.
Commonly associated with
- Immune deficiency
- Certain medications
If your IgM is high
IgM above the range is commonly associated with recent infection or some immune conditions.
Commonly associated with
- Recent infection
- Immune conditions
- Liver conditions
Typical reference range
| Group | Typical range |
|---|---|
| Adults | 40 – 230 mg/dL |
Typical adult values used by many US labs. Your own report prints the range your lab validated for its method, and that range is the one that counts. Labwise always uses the printed range first.
If it is within range
Your IgM is within the range printed by your lab.
Also listed as
Immunoglobulin M, IgM, Serum, Immunoglobulin M, Qn, Serum
Related tests
This page is general information about what a laboratory test measures and what results outside a reference range are commonly associated with. It is not medical advice, does not diagnose any condition and does not replace your clinician. Discuss your results with your healthcare provider.