Normal IgA Levels

Immunoglobulin A (IgA) is a globulin protein synthesized and secreted by plasma cells, structurally similar to antibodies or possessing antibody-like activity. So, what constitutes the normal range for immunoglobulin A?

Normal Range for Immunoglobulin A

The normal IgA level must be interpreted in conjunction with the patient’s age, as reference ranges vary across different age groups: - Newborns: 0–120 mg/L - Infants aged 1–6 months: 30–820 mg/L - Children aged 6 months to 2 years: 140–1,080 mg/L - Children aged 2–6 years: 230–1,900 mg/L - Children aged 6–12 years: 290–2,700 mg/L - Adolescents aged 12–16 years: Reference ranges may vary slightly among different hospitals.

Generally, the normal IgA level falls within 10%–20% of an individual’s total immunoglobulins. Values within this range are considered entirely normal. However, reference ranges may differ slightly depending on the laboratory or hospital performing the test. Therefore, it is best to interpret your results using the reference values provided by your specific healthcare institution, as there is currently no universally standardized reference range.

Elevated IgA levels warrant prompt medical evaluation at a hospital. A physician will comprehensively analyze the test results alongside the patient’s clinical symptoms and initiate appropriate diagnostic workup and targeted treatment based on the underlying cause. We hope this information has been helpful!