CRP blood test cost in San Francisco, CA
In San Francisco-Oakland-Fremont, CA, 11 hospitals list a cash price for C-reactive protein (CRP) blood test, standard (not high-sensitivity): from $22.00 to $150.00, with a median of $116.48. The lowest listed price is at Chinese Hospital Association — $94.48 less than the median here. Across California, the median is $47.59 at 100 hospitals.
Cash prices at 11 facilities across 10 cities for code 86140, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Jul 22, 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 San Francisco-Oakland-Fremont, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Chinese Hospital Association lowest San Francisco, CA · (415) 677-2480 Measurement C-reactive protein for detection of infection or inflammation | $22.00 | $22.00 | $1.14–$260.90 | — | Jul 22, 2026 source file |
| Kaiser Foundation Hospital - San Francisco San Francisco, CA · (415) 833-2646 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Kaiser Foundation Hospital - Oakland/Richmond Oakland, CA · (510) 752-1000 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Kaiser Foundation Hospital - Walnut Creek Walnut Creek, CA · (925) 295-4000 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Kaiser Foundation Hospital - Fremont Fremont, CA · (510) 784-4000 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Kaiser Foundation Hospital - Redwood City Redwood City, CA · (650) 299-2000 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Kaiser Foundation Hospital - San Rafael San Rafael, CA · (415) 444-2000 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Kaiser Foundation Hospital - Antioch Antioch, CA · (925) 813-6500 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Kaiser Foundation Hospital - San Leandro San Leandro, CA · (510) 454-1000 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Kaiser Foundation Hospital - South San Francisco South San Francisco, CA · (650) 742-3200 C-REACTIVE PROTEIN | $116.48 | $208.00 | $5.00–$15.00 | 44% | — source file |
| Stanford Health Care Tri-Valley Pleasanton, CA · (925) 847-3000 HC C Reactive Protein | $150.00 | $375.00 | — | 60% | Apr 1, 2026 source file |
Outpatient: lowest $22.00, median $116.48, highest $150.00 — a 6.8× difference within the same market.
As an inpatient, the same code is billed by 10 facilities here, median $116.48. 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 1 of 10 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 it is
A CRP test measures C-reactive protein, which the liver makes when there is inflammation in the body. It is used to look for infection or inflammatory conditions and to follow how they respond to treatment.
What the price covers
The price usually covers the CRP test only. The blood draw is often billed separately.
1 row held back from this comparison
It is priced below $1 or below a tenth of the national median for code 86140 ($44.64). 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.
| Hayward Sisters Hospital Hayward, CALC -CREACTIVE PROTEIN CARD | $1.26 | file |