CA-125 test cost in Riverside, CA — inpatient
In Riverside-San Bernardino-Ontario, CA, 10 hospitals list a cash price for CA-125 blood test (ovarian cancer marker) as an inpatient: from $15.86 to $148.95, with a median of $137.80. The lowest listed price is at Palo Verde Hospital — $121.94 less than the median here. Across California, the median is $137.80 at 89 hospitals.
Cash prices at 10 facilities across 8 cities for code 86304, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Sep 2, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Riverside-San Bernardino-Ontario, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Palo Verde Hospital lowest Blythe, CA · (760) 922-4115 Cancer Antigen (CA) 125 LC | $15.86 | $21.15 | — | 25% | Jul 1, 2026 source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Qu Immassay Qnt Tumor Ag Ca 125 | $21.15 | $21.15 | $14.80–$25.70 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Qu Immassay Qnt Tumor Ag Ca 125 | $21.15 | $21.15 | $14.80–$25.70 | — | — source file |
| St Mary Medical Center Apple Valley, CA · (760) 242-2311 HC IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 CDM | $61.44 | $128.00 | — | 52% | Apr 1, 2026 source file |
| Kaiser Foundation Hospital - Moreno Valley Moreno Valley, CA · (951) 251-6530 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 | $137.80 | $265.00 | $15.00–$45.00 | 48% | — source file |
| Kaiser Foundation Hospital - Fontana Fontana, CA · (909) 427-5000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 | $137.80 | $265.00 | $15.00–$45.00 | 48% | — source file |
| Kaiser Foundation Hospital - Riverside Riverside, CA · (951) 353-2000 IMMUNOASSAY TUMOR ANTIGEN QUANTITATIVE CA 125 | $137.80 | $265.00 | $15.00–$45.00 | 48% | — source file |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC IMMUNOASSAY QUAN CA 125 | $148.95 | $331.00 | $66.20–$297.90 | 55% | Sep 2, 2026 source file |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC IMMUNOASSAY QUAN CA 125 | $148.95 | $331.00 | $66.20–$281.35 | 55% | Sep 2, 2026 source file |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC IMMUNOASSAY QUAN CA 125 | $148.95 | $331.00 | $59.91–$248.25 | 55% | Sep 2, 2026 source file |
| Loma Linda University Behavioral Medicine Center Redlands, CA HC IMMUNOASSAY QUAN CA 125 | $148.95 | $331.00 | $182.05–$264.80 | 55% | Aug 31, 2026 source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Immassay Qnt Tumor Ag Ca 125 | $544.08 | $544.08 | $14.80–$544.08 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Immassay Qnt Tumor Ag Ca 125 | $544.08 | $544.08 | $14.80–$544.08 | — | — source file |
Inpatient: lowest $15.86, median $137.80, highest $148.95 — a 9.4× difference within the same market.
As an outpatient, the same code is billed by 14 facilities here, median $137.80 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 5 of 8 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 it is 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 it is
CA-125 is a protein that can be high in ovarian cancer. The test is used to evaluate some pelvic masses and to follow treatment.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.