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To evaluate humoral immunity, to diagnose and monitor the therapy of secretory B cell neoplasms (e.g., myeloma, Waldenstrom's macroglobulinemia). Newborn IgM levels are used as a screen to evaluate likelihood of in utero infections. Cord or neonatal serum may be screened for infections acquired in utero.
Cord blood (age <1 mos): 6 - 25 mg/dL, age 1 mos: 20 - 80 mg/dL, age 2-5 mos: 25 - 95 mg/dL, age 6-11 mos: 35 - 140 mg/dL, age 1-7 yrs: 40 - 190 mg/dL, age 8-11 yrs: 50 - 240 mg/dL, age 12-150 yrs: 50 - 370 mg/dL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.
Store at 2-8°C up to 8 days.
Samples may be frozen at -20°C or below for up to 3 months if they are frozen within 24 hours after collection.