Age related reference ranges ( all values in g/L):-
Cord Blood IgG1=3.6-8.4, IgG2=1.2-4.0, IgG3 = 0.3-1.5, IgG4 = <0.5
6 months IgG1=1.5-3.0, IgG2= 0.3-0.5, IgG3 = 0.1-0.6, IgG4= <0.5
2 years IgG1= 2.3-5.8, IgG2= 0.3-3.9, IgG3= 0.1-0.8, IgG4 = <0.5
5 years IgG1= 2.3-6.4, IgG2= 0.7-4.5, IgG3= 0.1-1.1, IgG4 = <0.8
10 years IgG1= 3.6-7.3, IgG2= 1.4-4.5, IgG3= 0.3-1.1, IgG4 = <1.0
15 years IgG1= 3.8-7.7, IgG2= 1.3-4.6, IgG3= 0.2-1.2, IgG4 = <1.1
Adult IgG1=3.2-10.2, IgG2= 1.2-6.6, IgG3= 0.2-1.9, IgG4 = <1.3
IgG1, IgG2, IgG3 and IgG4 ranges are sourced from Protein Reference Unit (PRU) Sheffield and last updated 14th January 2013 (http://www.immqas.org.uk/pru.asp?ID=316)