Test ID: ZH290
Component(s): Z7723 Immunoglobulin G, Qn, Serum LOINC 2465-3, Z7721 Immunoglobulin A, Qn, Serum LOINC: 2458-8, Z7722 Immunoglobulin M, Qn, Serum LOINC: 2472-9
CPT code: 82784 x 3
LOINC:
Specimen Type: Red or SST
Frequency: Within 1 day
Instructions: 2 mL Serum from Red or SST, Refrigerated
Text: Evaluate humoral immunity; Monitoring therapy in IgA or IgG or myeloma. IgA may be elevated in conditions affecting mucosal surfaces. Patients with repeated infections should have their immunoglobulins, specifically IgG, measured. The demonstration of IgM is useful in assessing whether an infection is acute.
Methodology: Immunologic