IgG4 Subclass (Blood)

Testing Laboratory

Department

Refer to Testing Lab link

Delphic Registration Code (Alpha Code)

ISUB

Test Code (Numeric Code)

7360

Please be advised that, effective 1 August 2026, IgG subclass testing for IgG1, IgG2, and IgG3 will no longer be performed due to limited clinical utility.

Going forward, IgG4 will be the only subclass routinely tested for all IgG subclass requests.

For further information or to discuss specific testing requirements, please contact the laboratory via LabLink on (09) 307 4949 ext 22000 or email immunology@adhb.govt.nz

Contact Information