Current promotion
Tumor Marker Blood Tests: CA 125, CA 15-3, CEA & More
Single tumor marker tests you can order online, no bundle required.
Affiliate disclosure: we earn a commission when you purchase lab tests through links on this site, at no extra cost to you. Learn more
Individual tumor marker tests from $15.96 with the 20% promotion; the CA 125 test is $29.56 (pricing at time of writing).
At a glance
Tumor marker blood tests measure specific proteins and antigens, CA 125, CA 15-3, CA 27.29, CA 19-9, CEA, and alpha-fetoprotein, that are markers associated with particular cancer types. Ordering a single marker makes sense when your doctor is following one value over time, such as CA 125 after a previously elevated result. Each test here can be purchased individually online, or bundled into a broader women's screening panel.
Best suited for
- Women whose physician is tracking one specific marker over time, such as CA 125 or CA 15-3
- Those who want a low-cost, focused baseline for a single marker rather than a full multi-test panel
- Women monitoring markers between clinical visits and sharing results with their care team
- Anyone comparing the cost of individual tumor marker tests against bundled screening panels
What's included
CA 125 Test
CA 27.29 Test
CA 15-3 Test
CA 19-9 Test
CEA Test
Alpha-Fetoprotein and AFP-L3 Test
Lactate Dehydrogenase (LDH) Test
Complete Blood Count with Differential and Platelets (CBC)
Amylase Test
Thyroglobulin Antibodies Test
Fecal Globin by Immunochemistry Test (InSure)
hCG Total Quantitative Test
CA-1 Cancer Screening - Women Panel
bundle option: 5 tests, 6 biomarkers
CA-2 Cancer Screening - Women Panel
bundle option: 10 tests, 43 biomarkers
CA-3 Cancer Screening - Women Panel
bundle option: 13 tests, 46 biomarkers
CA-4 Cancer Screening - Women Panel
bundle option: 15 tests, 48 biomarkers
The importance of testing
Each tumor marker has a distinct association: CA 125 with ovarian health, CA 15-3 and CA 27.29 with breast cancer monitoring, CA 19-9 with pancreatic and some digestive-tract cancers, CEA with colorectal and several other cancers, and alpha-fetoprotein with the AFP-L3 fraction with liver health. Testing a single marker keeps costs low and the result focused when you and your physician already know which value matters for your situation.
Marker levels are most useful as trends. Physicians commonly use these tests to track a value over time, watch for change after therapy, or monitor for recurrence, a pattern of results tells far more than one number. A standalone baseline can also give future results context.
No single marker result confirms or rules out cancer. CA 125 can rise with endometriosis, fibroids, or pelvic inflammation; CEA and CA 19-9 can be elevated in noncancerous conditions. View results as data points to review with your doctor, who can weigh them alongside imaging, exams, and your family history.
Supporting labs on the same page, a complete blood count with differential, LDH, amylase, thyroglobulin antibodies, and a stool-based fecal immunochemical test, can round out the picture of immune, pancreatic, thyroid, and digestive-tract health without stepping up to a full panel.
Promo code
CAW20Save 20% with code CAW20, current promotion; confirm final pricing on the partner page.
Ready to get your numbers? Order online, visit a nearby draw site, and receive private results to review with your doctor.
Order NowFrequently asked questions
Can I order a single tumor marker test instead of a full panel?
Yes, CA 125, CA 15-3, CA 27.29, CA 19-9, CEA, AFP with AFP-L3, and several supporting labs are each available as individual tests on the partner page. This suits situations where your doctor is following one specific value, while the CA-1 through CA-4 bundles cover multiple markers in one order.
Do I need a doctor's order or office visit to buy these tests?
No doctor's visit is required, the tests are sold direct-to-consumer, so you can order online and complete the blood draw at a local patient service center. Results are delivered electronically, and reviewing them with your own physician is strongly recommended, especially for tumor markers.
Which tumor marker is associated with which cancer?
CA 125 is a marker associated with ovarian cancer, CA 15-3 and CA 27.29 with breast cancer monitoring, CA 19-9 with pancreatic and some digestive-tract cancers, CEA with colorectal and several other cancers, and alpha-fetoprotein (with AFP-L3) with liver health. None is exclusive to one condition, which is why results are interpreted by a physician in context.
Are elevated tumor marker results always a sign of cancer?
No, elevated tumor markers frequently occur in noncancerous conditions. CA 125 can rise with endometriosis, uterine fibroids, or pelvic inflammation, and CEA and CA 19-9 can be affected by benign conditions as well. An out-of-range result is a flag to review with your doctor, who may recommend repeat testing, imaging, or further evaluation.
Is this testing available in every US state?
No, direct-to-consumer lab testing is restricted or prohibited in New York, New Jersey, and Rhode Island, so residents of those states may be blocked at the partner's checkout. Most other US residents can order online and test at a nearby patient service center.
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