Changes to IgG Subclass Reference Ranges

Effective March 2, 2019.

IgG Subclass Testing

IgG Subclass 1
10 – 12 Years: 423.0 – 1060.0 mg/dL

IgG Subclass 4:
6 – 8 Years: 0.4 – 99.2 mg/dL

All other reference ranges will remain the same.

Any additional information will be included in a future Technical Update. If you have any questions about these changes, please contact Client Services for assistance or email Kamran Kadkhoda, PhD, D(ABMLI) with medical questions.