CA-125 test cost in San Francisco, CA
In San Francisco-Oakland-Fremont, CA, 25 hospitals list a cash price for CA-125 blood test (ovarian cancer marker): from $45.03 to $273.00, with a median of $172.48. The lowest listed price is at Sequoia Hospital — $127.45 less than the median here. Across California, the median is $137.80 at 173 hospitals.
- The median here, $172.48, is 49% above the US median of $115.70.
- That is 8.3× Medicare's 2026 national rate for the same service ($20.81).
- San Francisco, CA ranks 4th of 4 metro areas in California by median, cheapest first.
- 12 of 25 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 25 facilities across 17 cities for code 86304, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 31, 2026; the hospital files themselves were last updated between Mar 26, 2026 and Sep 30, 2026.
Lowest$45.03Sequoia Hospital
Median$172.48half of hospitals charge less
Highest$273.00in this market
Difference6.1×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in San Francisco-Oakland-Fremont, CA.
median
Lowest $45.03Highest $273.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Sequoia Hospital lowest Redwood City, CA · (650) 369-5811 IA TUMOR AG CA 125 File of Sep 30, 2026 · source file | $45.03 | $132.00 | $18.50–$132.00 | 66% |
| Chinese Hospital San Francisco, CA · (415) 677-2480 Immunologic analysis for detection of tumor antigen, quantitative; CA 125 File of Jul 22, 2026 · source file | $97.00 | $97.00 | $20.19–$260.90 | — |
| Stanford Health Care Tri-Valley Pleasanton, CA · (925) 847-3000 HC Ca125 (C125) File of Apr 1, 2026 · source file | $168.40 | $421.00 | — | 60% |
| Kaiser Foundation Hospital - Antioch Antioch, CA · (925) 813-6500 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Foundation Hospital - Oakland/Richmond Oakland, CA · (510) 752-1000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Foundation Hospital - San Leandro San Leandro, CA · (510) 454-1000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Foundation Hospital - San Francisco San Francisco, CA · (415) 833-2646 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Fnd Hospital - Richmond Campus Richmond, CA · (510) 752-1000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Foundation Hospital - Redwood City Redwood City, CA · (650) 299-2000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Foundation Hospital - Fremont Fremont, CA · (510) 784-4000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Foundation Hospital - San Rafael San Rafael, CA · (415) 444-2000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Foundation Hospital - South San Francisco South San Francisco, CA · (650) 742-3200 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| Kaiser Foundation Hospital - Walnut Creek Walnut Creek, CA · (925) 295-4000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 File of Apr 1, 2026 · source file | $172.48 | $308.00 | $19.00–$60.00 | 44% |
| MarinHealth Medical Center Greenbrae, CA · (415) 925-7900 IMMUNOLOGIC ANALYSIS FOR DETECTION OF TUMOR ANTIGEN; QUANTITATIVE; CA 125 File of Mar 26, 2026 · source file | $175.20 | $292.00 | $20.81–$2,330.00 | 40% |
| MarinHealth Medical Center Greenbrae, CA · (415) 925-7900 IMMUNOASSAY TUMOR CA 125 File of Mar 26, 2026 · source file | $182.21 | $303.68 | $20.81–$2,330.00 | 40% |
| Alta Bates Summit Medical Center-Summit Campus-Hawthorne Oakland, CA · (510) 655-4000 HCHG CA 125 File of Apr 1, 2026 · source file | $256.00 | $256.00 | — | — |
| Mills Health Center San Mateo, CA · (650) 696-5400 HCHG CA 125 File of Apr 1, 2026 · source file | $256.00 | $256.00 | — | — |
| Mills-Peninsula Medical Center Burlingame, CA · (650) 696-5400 HCHG CA 125 File of Apr 1, 2026 · source file | $256.00 | $256.00 | — | — |
| Alta Bates Summit Medical Center Oakland, CA · (510) 655-4000 HCHG CA 125 File of Apr 1, 2026 · source file | $256.00 | $256.00 | — | — |
| Alta Bates Summit Medical Center - Alta Bates Camp Berkeley, CA · (510) 204-4444 HCHG CA 125 File of Apr 1, 2026 · source file | $256.00 | $256.00 | — | — |
| California Pacific Medical Ctr-Davies Campus Hospital San Francisco, CA · (415) 600-6000 HCHG CA 125 File of Apr 1, 2026 · source file | $256.00 | $256.00 | — | — |
| California Pacific Medical Center- Van Ness Campus San Francisco, CA · (415) 600-6000 HCHG CA 125 File of Apr 1, 2026 · source file | $256.00 | $256.00 | — | — |
| Alta Bates Summit Medical Center - Herrick Campus Berkeley, CA · (510) 204-4444 HCHG CA 125 File of Apr 1, 2026 · source file | $256.00 | $256.00 | — | — |
| Mills-Peninsula Medical Center Burlingame, CA · (650) 696-5400 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| California Pacific Medical Center- Van Ness Campus San Francisco, CA · (415) 600-6000 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| Mills Health Center San Mateo, CA · (650) 696-5400 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| Alta Bates Summit Medical Center - Alta Bates Camp Berkeley, CA · (510) 204-4444 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| Alta Bates Summit Medical Center Oakland, CA · (510) 655-4000 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| Eden Medical Center Castro Valley, CA · (510) 537-1234 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| Alta Bates Summit Medical Center - Herrick Campus Berkeley, CA · (510) 204-4444 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| Novato Community Hospital Novato, CA · (415) 209-1300 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| Alta Bates Summit Medical Center-Summit Campus-Hawthorne Oakland, CA · (510) 655-4000 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| Sutter Delta Medical Center Antioch, CA · (925) 779-7200 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
| California Pacific Medical Ctr-Davies Campus Hospital San Francisco, CA · (415) 600-6000 HCHG CORE CA 125 File of Apr 1, 2026 · source file | $273.00 | $273.00 | — | — |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More
Off list How much lower the cash price is than the list price.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
Outpatient: lowest $45.03, median $172.48, highest $273.00 — a 6.1× difference within the same market.
As an inpatient, the same code is billed by 23 facilities here, median $172.48. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 3 of 13 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What CA-125 test is, what the price covers and why prices differ: CA-125 test explained.
2 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 86304 ($109.00). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Hospital | Cash price | File |
|---|---|---|
| St. Rose Hospital Hayward, CALC -CA125 | $1.89 | file |
| Sequoia Hospital Redwood City, CARL-A-CA125 80462 | $3.76 | file |
File Link to the hospital's own price file.