CA 19-9 (Pancreatic/GI Cancer)
CA 19-9 is a tumor-associated antigen often elevated in pancreatic, biliary, and other gastrointestinal cancers. It is primarily used to monitor treatment response and recurrence rather than for screening, because it is also elevated in pancreatitis, cholangitis, and cholestasis and is not produced at all in people with certain blood group antigens.
Optimal range: who says what
No institution or named practitioner we track states an optimal target for CA 19-9 (Pancreatic/GI Cancer). How we verify ranges.
- No stated targetNo separate optimal establishedMonitoring marker; interpret against the lab's cutoff and your own trend
- Lab reference interval<37 U/mLWhat a lab report flags against. A lab interval is not an optimal target.
1 providers include this
Cancer Screening Markers
Why CA 19-9 (Pancreatic/GI Cancer) matters
Elevated in pancreatic cancer and other GI malignancies. Also increased in pancreatitis and biliary obstruction. Used for monitoring treatment.
Which Providers Test CA 19-9 (Pancreatic/GI Cancer)?
Of the panels we itemize, only Function Health ($365/year, 160+ biomarkers) includes CA 19-9 (Pancreatic/GI Cancer).
1 panel that includes it, cheapest first
| Provider | Annual Cost | Total Biomarkers | $/Biomarker |
|---|---|---|---|
 Function Health | $365 | 160+ | $2.28 |
$/Biomarker is annual cost divided by the panel's advertised biomarker count, not the price of this one test. We track 23 blood test providers (32 plans); 21 of those plans are itemized marker by marker. Compare all of them.
20 itemized panels do not include CA 19-9 (Pancreatic/GI Cancer)
Superpower · WHOOP Advanced Labs · Labcorp OnDemand · Life Extension Elite · Everlywell · Mito Health · InsideTracker · Marek Health Base · Marek Health Comprehensive · Marek Health Complete · Marek Health Executive · Blueprint · Empirical Health · Oura Health Panels · SiPhox Health · Hims Labs · Healthspan · Vitality Blueprint Standard · Vitality Blueprint Elite · Ultrahuman Blood Vision Annual
11 providers not itemized in our matrix
We have not itemized these marker by marker (some sell tests one at a time), so this page cannot say whether they offer CA 19-9 (Pancreatic/GI Cancer). Check with them directly.
Life Extension Standard · Quest Health · Ultrahuman Blood Vision · Lifeforce · Hundred Health · Personalabs · Walk-In Lab · HealthLabs · WHOOP Specialized Panels · Marek Health Essential · Vitality Blueprint Upload
Frequently Asked Questions
What is the optimal range for CA 19-9 (Pancreatic/GI Cancer)?
No separate optimal established: Monitoring marker; interpret against the lab's cutoff and your own trend. Lab reference interval: <37 U/mL. That is what a lab report flags against, not an optimal target.
Which blood test providers include CA 19-9 (Pancreatic/GI Cancer)?
1 of the 21 blood testing panels we itemize marker by marker include CA 19-9 (Pancreatic/GI Cancer) in their panels. This biomarker has limited availability.
Medical Disclaimer
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.
Last reviewed Sep 23, 2026 · First published Sep 30, 2025