Laboratory Services

Immunoglobulin, IgE Total

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Updated Test Information:

Test Description
Immunoglobulin, IgE Total

Immunoglobulin E, Total IgE

Test ID
General Information

Immunoglobulins are an important class of proteins involved with the immune response. Immunoglobulin E is associated with allergic and parasitic activation. After exposure, also called sensitization, an individual will produce IgE. The total IgE test will measure the overall quantity of a patient’s serological immunoglobulin E. Assay results should be used in conjunction with clinical findings and other serological tests.

Specimen Type


Alternate Specimen Type

Plasma (Na-Heparin or EDTA)

Specimen Requirements


Minimum Sample Volume

1 mL

Pediatric Min. Volume (if applicable)

500 uL

Additional Processing Details

Caution: Serum/plasma samples are not to be repeatedly frozen and thawed, since this can cause analyte deterioration. They are to be thawed only once.


Stored at 2-8˚C: 7 Days
Specimens may be kept at controlled room temperature for shipping purposes only. Otherwise, they should be stored at 2-8˚C if assayed within 7 days or -20˚C for longer-term storage.


Fluorescent enzyme immunoassay (FEIA)

Estimated TAT

2-5 days

Testing Schedule

Monday-Saturday, alternating days

CPT Code(s)


Reference Range
0-3 mos <9 kU/L
3-6 mos <17 kU/L
6-9 mos <30 kU/L
9 mos- 1 yr <39 kU/L
1 yr - 2 yr <53 kU/L
2 yr – 3 yr <93 kU/L
3 yr – 4 yr <128 kU/L
4 yr – 5 yr  <160 kU/L
5 yr - 6 yr <192 kU/L
6 yr – 7 yr <224 kU/L
7 yr – 8 yr <248 kU/L
8 yr – 9 yr <280 kU/L
9 yr – 10 yr <304 kU/L
10 yr  <328 kU/L
>10 yr <114 kU/L
Performing Lab

Incyte Diagnostics

LOINC Code(s)