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Test Code LAB90999 IgE, Quantitative, Plasma or Serum

Additional Codes

45954

Reporting Title

Total IgE

Immunoglobulin E

IgE

Total IGE

Methodology

Fluorescent enzymatic immunoassay

Used to distinguish IgE mediated from non-IgE mediated allergies. Also elevated with IgE myeloma, pulmonary aspergillosis, and active parasitic infection.

Performing Laboratory

Nationwide Children's Laboratory

Specimen Requirements

Submit only 1 of the following specimens:

 

Preferred:

Serum

Draw blood in a gold-top serum gel tube(s). Spin down and send 1 mL of serum refrigerated. Avoid hemolysis.

Note:

1. A plain, red-top tube(s) with or without gel is also acceptable.

2. Label specimen appropriately (serum).

3. Allow specimen to clot completely at room temperature.

 

Alternate:

Plasma

Draw blood in a green-top (heparin) or purple-top (EDTA) tube(s). Spin down and send 1 mL of heparinized plasma refrigerated. Avoid hemolysis.

Note:

1. Label specimen appropriately (plasma).

2. Allow to clot completely at room temperature.

3. Centrifuge within 2 hours, separate supernatant and refrigerate.

 

 

Specimen Stability Information

Specimen Type Temperature Time
Serum or plasma Refrigerated 3 days
  Ambient  4 hours
  Frozen  6 months

 

Specimen Transport Temperature

Refrigerate/Frozen OK/Ambient within 4 hours of collection.

Best transported refrigerated to avoid potential delays at room temperature

Reference Values

Newborn:   0-10 KU/L

0-42 days:  0-14 KU/L

43 days to 5 months:  0-25 KU/L

6 to 9 months:  0-75 KU/L

10 months to 4 years: 0-257 KU/L

>5 years: 0-103 Ku/L

 

Note:  Not all allergies are IgE mediated.

Day(s) Test Set Up

Monday through Friday

Test Classification and CPT Coding

82785