Gastrin
The hormone that drives stomach acid, and the key marker for gastrin-secreting tumors.
Consider this test if:
- Severe, recurrent, or multiple peptic ulcers that resist standard treatment
- Unexplained chronic diarrhea or steatorrhea alongside ulcer symptoms
- Investigating possible Zollinger-Ellison syndrome or a gastrin-secreting tumor
- A personal or family history of multiple endocrine neoplasia type 1
- Suspected gastrinoma where acid secretion and gastrin are being evaluated together
- HSA/FSA eligible
- Typical results in 2-4 days · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you ·
Pre-test considerations
Overnight fasting is required, preferably 12 hours or more. Acid-suppressing drugs, especially proton pump inhibitors, raise gastrin and are a common cause of falsely high results, so discuss timing with your clinician before testing. Biotin supplements can distort the assay: separate standard doses by at least 8 hours and high doses by at least 72 hours from the draw. Interpret results in light of gastric acid secretion, since elevated gastrin alone is not specific.
Video consult with your Care Team
A 1:1 call to discuss your health.
What members say on Trustpilot
What this test is for
Gastrin is a hormone made by G cells in the stomach lining that stimulates gastric acid production, antral motility, and secretion of pepsin and intrinsic factor. The main reason to measure it is to investigate severe or recurrent peptic ulcers, unexplained chronic diarrhea, and steatorrhea, where markedly high levels point toward Zollinger-Ellison syndrome and gastrin-secreting tumors (gastrinomas). Levels above 1000 pg/mL with acid hypersecretion essentially confirm Zollinger-Ellison syndrome, but moderate elevations have many causes, including antral G-cell hyperplasia, atrophic gastritis, and acid-suppressing medications like proton pump inhibitors. Because 15 to 26 percent of Zollinger-Ellison cases occur with multiple endocrine neoplasia type 1, an elevated result is sometimes the first clue to a broader endocrine picture. When fasting gastrin is high but not diagnostic, a secretin stimulation test is the usual next step to distinguish gastrinoma from other causes.
- Specimen
- Serum or plasma
- Measures
- Mass concentration
What you'll learn
-
Insights that connect the dots. A clinician reads your whole picture, not one result in isolation, connecting family history, past results, and lifestyle into clear next steps.
-
Your personalized action plan. Nutrition, supplements, and training in one clinician-reviewed protocol, updated as your results change.
-
Track your trends. Upload results from any lab and see each biomarker trend over time, so you know what is working.
-
Never miss a recheck. Mito tells you what is worth retesting and when, then reminds you so nothing slips.
What to expect
- 1 Book instantly
Click, book, done. Choose a convenient lab location near you. Transparent, up-front pricing.
- 2 Quick lab visit
Testing to fit your busy schedule, usually 15 minutes or less. Walk-in and appointments available.
- 3 Typical results in 2-4 days
Your results post straight to your dashboard as soon as the lab completes them.
- 4 Expert guidance
Included with Mito membership. A clinician reviews your results and your personalized action plan follows, with clear next steps.
Everything your health needs,
in one membership
-
Every test at our cost
Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
-
Continuous tracking, all in one place
Upload past labs and watch your trends over time. Every marker and visit lives in one longitudinal record, so all your care stays together.
-
Year-round clinician support
Text anytime and get clinician-reviewed answers. When you want to go deeper, 1:1 consultations are available at affordable rates.
All for $9/month
Order any test or consult without joining. For $9/month, members unlock member prices, trend tracking, and year-round clinician guidance.
Mito Membership
$9 /mo
cancel anytime
Without membership
$0
pay as you go
At-cost pricing on labs, scans, and more
Supplements at 30% off retail prices Coming soon
On-demand clinician consults when you need guidance
Personalized action plans across supplements, exercise, nutrition, and sleep
AI health coaching to help you act on your results
Year-round medical support, with in-chat clinician escalation
All your health records in one personal vault, with trends and biological age tracking
Early access to new diagnostics and product releases
More tests to consider
Loading essentials…
Frequently asked questions
View all FAQsHow does pricing work?
Every test shows the member price next to the standard non-member price, so you can see what membership saves you. The member price is our cost, covering the lab and what it takes to run the service. It is never a profit on the test itself. Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9 per month, and any applicable lab order or draw fee is itemized before you pay.
Where do I get tested?
Choose an available partner lab at checkout. If your cart contains multiple blood tests, Mito helps consolidate the eligible tests at one lab when possible. At-home kits and scans follow the collection or appointment process shown on their product page.
Is this eligible for HSA/FSA?
Yes. Eligible tests can be paid for with an HSA or FSA card at checkout.
When will I get my results?
Your results appear in your Mito dashboard after the laboratory completes processing. A clinician then reviews them before your analysis and personalized action plan are finalized. Timing varies by test, and specialty assays and at-home kits may take longer.
Do I need a physician's order?
No. Mito provides the laboratory order when one is required, so you do not need to arrange a separate physician visit before purchasing.
Recently viewed
Loading essentials…