C. diff test cost in Santa Rosa, CA — inpatient
In Santa Rosa-Petaluma, CA, 4 hospitals list a cash price for C. difficile toxin gene test (stool PCR) as an inpatient: from $40.80 to $932.79, with a median of $535.45. The lowest listed price is at Healdsburg Hospital — $494.65 less than the median here. Across California, the median is $179.25 at 99 hospitals.
Cash prices at 4 facilities across 3 cities for code 87493, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 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 Santa Rosa-Petaluma, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Healdsburg Hospital lowest Healdsburg, CA · (707) 431-6500 HC CLOSTRIDIUM DIFFICILE TOXINS AMPLIFIED PROBE | $40.80 | $80.00 | — | 49% | Apr 1, 2026 source file |
| Kaiser Foundation Hospital - Santa Rosa Santa Rosa, CA · (707) 571-4000 INF AGENT DET NUCLEIC ACID CLOSTRIDIUM AMP PROBE | $341.60 | $610.00 | $35.00–$110.00 | 44% | — source file |
| Providence Santa Rosa Memorial Hospital Santa Rosa, CA · (707) 525-5300 HC CLOSTRIDIUM DIFFICILE TOXINS AMPLIFIED PROBE | $729.30 | $1,430.00 | — | 49% | Apr 1, 2026 source file |
| Petaluma Valley Hospital Petaluma, CA · (707) 778-1111 HC CLOSTRIDIUM DIFFICILE TOXINS AMPLIFIED PROBE | $932.79 | $1,829.00 | — | 49% | Apr 1, 2026 source file |
Inpatient: lowest $40.80, median $535.45, highest $932.79 — a 22.9× difference within the same market.
As an outpatient, the same code is billed by 4 facilities here, median $351.60 — that is the price to compare if you are not being admitted.
Cash or insurance?
At the one hospital here that publishes insurer rates for this code, the cash price is not below the highest rate a health plan has negotiated. 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
This stool test looks for the toxin gene of Clostridioides difficile, a cause of severe diarrhea, often after antibiotics or a hospital stay.
What the price covers
The price usually covers running the stool test; the collection kit is often included.