Lab references

Inflammation, Autoimmunity, and Immunoglobulins

Immunoglobulin A (IgA) — lab reference

Age and assay-specific. Important when interpreting IgA-based celiac testing.

Updated Sep 23, 2026 · Educational reference

Purser Wellness approved rule

Unit: mg/dL

Male: 61-356

Female: 61-356

How to read this marker

Age and assay-specific. Important when interpreting IgA-based celiac testing.

The wider testing context

Autoimmune tests are not interpreted as simple high/low values. Pretest probability, titer, pattern, repeatability, symptoms, and organ findings matter.

Using this reference

This is the approved adult, nonpregnant baseline unless the rule explicitly states otherwise. Keep the performing laboratory’s reference interval separate from this Purser Wellness rule. Match units and review the specimen, method, timing, medicines and relevant clinical context before interpreting a result. These pages do not calculate a personal high/low status or prescribe treatment.

A question to bring to your visit

Which parts of the Immunoglobulin A (IgA) rule apply to my report’s method, units and collection conditions, and what other findings should we review alongside it?

Approved by Dr. Daniel Purser, MD · PW-LABS-1.0. The source laboratory’s interval remains separate.

Names you may see

Immunoglobulin A (IgA) · IgA · Immunoglobulin A