Health Lab

Test Name:

IgM, TOTAL

Test Code:

2120214

Alias:

Immunoglobulin M
LAB72

CPT Code(s):

82784

Preferred Specimen:

1.0 mL serum

Container:

SST (gold)

Alternate Container:

Lithium Heparin (lt green)

Minimum Volume:

0.3 mL serum or plasma
This volume does not allow for repeat testing.

Collection Instructions:

Allow specimen to completely clot (this can take up to 60 minutes). Centrifuge for 15 minutes. If the specimen is collected in a tube without a gel barrier, centrifuge and transfer the plasma into a properly labeled transfer tube within 2 hours of collection.

Transport Temperature:

Refrigerated

Stability:

Refrigerated: 4 days

Frozen: 6 months

Schedule:

Set up: Daily; Results in 24-48 hours

Method:

Immunoturbidimetric method

Clinical Significance:

Measurements of IgM are used in the diagnosis and treatment of immune deficiency states, protein-loosing conditions, Waldenstrom’s macroglobinemia, chronic infections, and liver disease.

Reference Ranges:

Updated 03/14/2024

Reference Range Table

Result	Units	Gender	Age	Range
IgM, Total	mg/dL	Both	0 Day - 15 Day	20-40
IgM, Total	mg/dL	Both	15 Day - 3 Month	20-70
IgM, Total	mg/dL	Both	3 Month - 1 Year	30-90
IgM, Total	mg/dL	Male	1 Year - 19 Year	40-130
IgM, total	mg/dL	Female	1 Year - 19 Year	50-170
IgM, Total	mg/dL	Both	19 Year - 999 Year	45-280

The CPT codes included in this publication are in accordance with Current Procedural Terminology, a publication of the American Medical Association. CPT codes are provided here for the convenience of our clients; however, correct coding often varies from one carrier to another, and HealthLab may bill specific carriers using codes other than those shown. Clients who bill for services should verify the code(s) with the applicable payor to confirm that their use is appropriate in each case.