Inflammation / Immune

Immunoglobulin M (IgM)

Unit: mg/dLID: I011

What This Test Measures

First-response antibody; acute infections

Conventional vs. Functional Optimal Range

Conventional "Normal"

40-230 mg/dL

Your doctor says you're "fine" anywhere in this range

Functional Optimal

60-200 mg/dL

This is where you actually feel great

The gap between these ranges is why you feel terrible with "normal" labs. Conventional medicine waits for disease. Functional medicine optimizes for health.

Gabriel's Take

IgM is the initial antibody response to infections. Low IgM (<40) = immunodeficiency. High IgM (>230) = acute infection or lymphoproliferative disorder (Waldenström's). Should be mid-range (60-200).