IgM, Total

Immunoglobulin M, or IgM for short, is a basic antibody that is produced by B cells. IgM is by far the physically largest antibody in the human circulatory system. It is the first antibody to appear in response to initial exposure to an antigen. The spleen where plasmablasts reside is the major site of specific IgM production.

Specimen: Serum

Reference Values: 

1-3 Months Old: 8-76 mg/dl  
3-7 Months Old: 24-164 mg/dl  
7-12 Months Old: 42-280 mg/dl  
1-2 Years Old: 27-217 mg/dl  
2-3 Years Old: 53-215 mg/dl  
3-6 Years Old: 41-242 mg/dl       
6-8 Years Old: 51-224 mg/dl  
12-16 Yeras Old: 67-137 mg/dl  
Adults: 86-360 mg/dl                   

Method: RID                       

Loinc: 2472-9