Immunoglobulins, Quantitative, IgA, IgE, IgG, IgM

CPT: 82784(x3); 82785
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Test Includes

Immunoglobulin A; immunoglobulin E; immunoglobulin G; and immunoglobulin M quantitation

Special Instructions

State patient's age on the request form.

This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H, or coenzyme R). It is recommended to ask all patients who may be indicated for this test about biotin supplementation. Patients should be cautioned to stop biotin consumption at least 72 hours prior to the collection of a sample.

Expected Turnaround Time

2 - 4 days

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Specimen Requirements




3 mL


Red-top tube or gel-barrier tube

Storage Instructions

Samples suspected of having macroglobulins or cryoglobulins should be drawn and held at 37°C. Samples suspected of containing cold agglutinins should not be refrigerated prior to serum separation from clot.

Stability Requirements



Room temperature

14 days


14 days


14 days

Freeze/thaw cycles

Stable x3

Test Details


IgG, IgA, IgM: Immunologic; IgE: Thermo Fisher ImmunoCAP®


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
002295 Immunoglobulins A/E/G/M, Serum 34550-4 001776 Immunoglobulin G, Qn, Serum mg/dL 2465-3
002295 Immunoglobulins A/E/G/M, Serum 34550-4 001784 Immunoglobulin A, Qn, Serum mg/dL 2458-8
002295 Immunoglobulins A/E/G/M, Serum 34550-4 001792 Immunoglobulin M, Qn, Serum mg/dL 2472-9
002295 Immunoglobulins A/E/G/M, Serum 34550-4 002173 Immunoglobulin E, Total IU/mL 19113-0

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