Gastrin 478

Test Code
GS

Alias/See Also
GS

CPT Codes
82941

Preferred Specimen
1 mL serum

Patient Preparation
Overnight fasting (12 hours)

Minimum Volume
1

Instructions
Fasting specimen preferred. Draw one SST and send serum frozen

Transport Container
SST

Transport Temperature
F

Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 28 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Thawed specimens • Gross hemolysis • Gross lipemia • Grossly icteric

Methodology
Immunoassay (IA)

Setup Schedule
Set up: Mon-Fri evenings; Report available: Next day

Reference Range
Reference range applies to fasting specimen only
<5 years Not established
5-17 years <65 pg/mL
≥18 years ≤100 pg/mL


Clinical Significance
For the diagnosis and monitoring of gastrin-secreting tumors, gastric ulcer, Zollinger-Ellison syndrome. Increased in pernicious anemia.

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.