Austin Pathology

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Immunoglobulin G Subclasses

Alternate Names
IgG Subclasses, IGGS, IGG4
Ordering Information
A total IgG will also be performed when IgG Subclasses are requested. The sum of the Subclasses should be within plus or minus 15% of the total IgG
Laboratory
Biochemistry
Specimen
Blood
Container
Serum tube (gold top)
Minimum Adult Volume
0.5mL
Minimum Paediatric Volume
None
Frequency
Monday - Friday
Reference Interval
Adult > 18 years old IgG1 3.8 - 9.3 g/L
  IgG2 2.4 - 7.0 g/L
  IgG3 0.22 - 1.76 g/L
  IgG4 0.04 - 0.86 g/L
14 - 18 years IgG1 3.15 - 8.55 g/L
  IgG2 0.64 - 4.95 g/L
  IgG3 0.23 - 1.96 g/L
  IgG4 0.11 - 1.57 g/L
12 - 14 years IgG1 3.42 - 11.5 g/L
  IgG2 1.0 - 4.55 g/L
  IgG3 0.28 - 1.25 g/L
  IgG4 0.04 - 1.36 g/L
10 - 12 years IgG1 4.23 - 10.6 g/L
  IgG2 0.76 - 3.55 g/L
  IgG3 0.17 - 1.73 g/L
  IgG4 0.02 - 1.15 g/L
8 - 10 years IgG1 4.32 - 10.2 g/L
  IgG2 0.72 - 4.3 g/L
  IgG3 0.13 - 0.85 g/L
  IgG4 0.02 - 0.93 g/L
6 - 8 years IgG1 2.88 - 9.18 g/L
  IgG2 0.44 - 3.75 g/L
  IgG3 0.16 - 0.85 g/L
  IgG4 < 0.99 g/L
4 - 6 years IgG1 3.06 - 9.45 g/L
  IgG2 0.61 - 3.45 g/L
  IgG3 0.1 - 1.22 g/L
  IgG4  
2 - 4 years IgG1 3.15 - 9.45 g/L
  IgG2 0.36 - 2.25 g/L
  IgG3 0.17 - 0.68 g/L
  IgG4  
< 2 years IgG1 1.94 - 8.42 g/L
  IgG2 0.23 - 3.0 g/L
  IgG3 0.19 - 0.85 g/L
  IgG4 < 0.78 g/L
Please note: Reference Intervals were updated on 19th July 2013 to correspond with a change in assays.