Test directory: Immunoglobulin G Subclasses

Ordering Code 211
Test Name Immunoglobulin G Subclasses
Alias IgG Subclasses
Preferred Specimen Serum
Preferred Container SST (Gold)
Other Specimen/Container Serum in Plain (Red)
Optimum Volume 2 mL
Collection Instructions Fasting recommended, but not required.
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
Specimen Stability Ambient: 3 Days
Refrigerated: 3 Weeks
Frozen: 6 Months
Rejection Criteria Grossly hemolyzed, Plasma
Avail. Stat NO
Analytic Time Up to 5 Days
Methodology Nephelometry
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of November 29, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
IgG 1 ALL See report.
IgG 2 ALL See report.
IgG 3 ALL See report.
IgG 4 ALL See report.
IgG, Serum ALL See report.