Immunoglobulin G Subclass 1

Test Code

5425

CPT Codes
82787

Preferred Specimen

1 mL serum

Minimum Volume

0.5 mL

Transport Container

Plastic screw-cap vial

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 72 hours
Refrigerated: 10 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis • Lipemia

Methodology
Immunoturbidimetric Assay

Setup Schedule

Set up: Mon-Sat; Report available: 3-5 days

Reference Range

0-1 Year	194-842 mg/dL
2-3 Years	315-945 mg/dL
4-5 Years	308-945 mg/dL
6-7 Years	288--918 mg/dL
8-9 Years	432-1020 mg/dL
10-11 Years	423-1080 mg/dL
12-13 Years	342-1150 mg/dL
14-17 Years	315-855 mg/dL
Adults	382-929 mg/dL

Clinical Significance

Measurement of subclasses may be a valuable aid in the management and understanding of immunodeficiency diseases, hypersensitivity states, and conditions involving susceptibility to infection.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.