IMMUNOGLOBULIN-M

Mnemonic

IGM

Synonym

IgM

Specimen Collection Requirements

Collect

Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube

Handling

Allow serum to clot completely at room temperature (minimum for SST - 30 minutes and red top tubes - 60 minutes). Centrifuge and separate serum from cells within one hour of collection.

Preferred Volume

1.0 mL

Minimum Volume

0.5 mL (1.2 mL whole blood draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed or grossly lipemic specimens

Stability

AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 8 hours; Refrigerated (2-8°C): 7 days; Frozen (≤ -20°C): 3 months if frozen within 24 hours of collection (avoid repeated freeze/thaw cycles)

Testing Information

Performed

Monday - Friday

Reported

24-72 hours

Method

Nephelometry

Reference Values

Reference Values

MALE:    25-210 mg/dL
FEMALE:    31-257 mg/dL
Age adjusted ranges.

CPT Codes

82784

Last Updated: Thursday, January 5, 2017 03:42:16 AM