Gastrin 8 specimens Bld 67208

Test Code
GASTRIN8

Alias/See Also
GASTRIN8

CPT Codes
82938 X 7; 82941

Preferred Specimen
1 mL (x8) frozen serum for each timed specimen

Patient Preparation
Overnight fasting (12 hours)
The serum secretin test requires patients to be off antacids and anticholinergic medications for 12 hours prior to the test. Proton pump inhibitors should not be discontinued because of concern of complications (acute bleeding and/or perforation if acid suppression is discontinued).

Minimum Volume
8

Instructions
Medication restrictions and fast 8 timed samples. See website

Transport Container
SST

Transport Temperature
F

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

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

Methodology
Immunoassay

Setup Schedule
Set up: Mon-Sat; Report available: Same 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
Post secretion stimulation response
>200 pg/mL above basal level: positive test


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

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.