Alert

Immunoglobulin G Subclasses, IgG Subclasses

Includes:
IgG1, IgG2, IgG3, IgG4, and Total IgG

Tube Type

Test ID   LAB1001
EPIC ORDER   IgG 1, 2, 3, and 4
CPT Code(s)   82787 x 4, 82784
Group/Individual Test   Group
Laboratory   Core Referral Testing
Tube Station   30
Specimen Routine: 3 mL blood/Gold SST tube
  Micro: 2.0 mL blood
Availability Routine: Reference Laboratory - Mayo Clinic Laboratories
Turnaround Time   3-5 days
Reference Range Normal: See separate report

Reviewed by J. Carr on November 11, 2025

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514