Growth Hormone Antibody [37072X]

Test Code

CPT Codes

Preferred Specimen
0.5 mL serum collected in a red-top tube (no gel)

Minimum Volume
0.2 mL

Other Acceptable Specimens

Serum collected in: SST (red-top/glass or plastic) tube • Plasma collected in: EDTA (lavender-top) or sodium heparin (green-top) tube

Transport Temperature
Refrigerated (cold packs)

Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 6 Months

Radiobinding Assay (RBA)

This test was developed and its performance characteristics have been determined by Quest Diagnostics. Performance characteristics refer to the analytical performance of the test.

Setup Schedule
Setup: Tues a.m.; Report available: 4 days

Reference Range


Clinical Significance
Human Growth Hormone (GH) is now a routine replacement therapy in GH-deficient patients. About 5% of patients will produce neutralizing antibodies, and it is recommended that testing for GH antibody is conducted for all patients with documented GH deficiency, who do not respond as expected to GH therapy.

Performing Laboratory
Quest Diagnostics Nichols Inst San Juan Capistrano 
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130

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.