IGM
Immunoglobulin M (IgM), Serum
EPIC Test Procedure Code: LAB2244
Performing Lab:
Referral Lab
Required Patient Info:
This test is temporarily being forwarded to LabCorp (staying in the Metro) due to reagent issues.
Container Type:
Gold gel tube or plain red tube
Specimen Type:
Serum
Preferred Volume:
1 mL (adult), 0.4 mL (pediatric)
Minimum Volume:
0.4 mL (Note: This volume does not allow for repeat testing.)
Store and Transport:
Refrigerated
Stability:
Room Temperature – 14 days
Refrigerated – 14 days
Frozen – 14 days (Freeze/Thaw cycles: stable x3)
Unacceptable Condition:
Excessive lipemia
CPT Codes:
82784 - Immunoglobulin M (EAP 30013400)
Method:
Immunoturbidimetric
Reference Ranges:
Clinical Significance:
Evaluate humoral immunity; establish the diagnosis and monitor therapy in macroglobulinemia of Waldenström or plasma cell myeloma. IgM levels are used to evaluate likelihood of in utero infections or acuteness of infection.