C. diff test cost in Riverside, CA
In Riverside-San Bernardino-Ontario, CA, 24 hospitals list a cash price for C. difficile toxin gene test (stool PCR): from $18.96 to $236.25, with a median of $87.30. The lowest listed price is at San Gorgonio Memorial Hospital — $68.34 less than the median here. Across California, the median is $152.88 at 201 hospitals.
- The median here, $87.30, is 36% below the US median of $136.79.
- That is 2.3× Medicare's 2026 national rate for the same service ($37.27).
- Riverside, CA has the lowest median of 5 metro areas in California with at least 10 hospitals pricing this code.
- 6 of 24 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 24 facilities across 19 cities for code 87493, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 1, 2026; the hospital files themselves were last updated between Feb 25, 2026 and Sep 30, 2026.
Lowest$18.96San Gorgonio Memorial Hospital
Median$87.30half of hospitals charge less
Highest$236.25in this market
Difference12.5×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 Riverside-San Bernardino-Ontario, CA.
median
Lowest $18.96Highest $731.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| San Gorgonio Memorial Hospital lowest Banning, CA · (951) 769-2101 C DIFF AMPLIFIED PROBE File of May 20, 2026 · source file | $18.96 | $94.81 | $35.41–$111.81 | 80% |
| Hemet Global Medical Center Hemet, CA · (951) 652-2811 B-LAB NUCLEIC ACID PROBE A+3 more lines at this price File of Jun 15, 2026 · source file | $20.00 | $20.00 | $9.00–$74.22 | — |
| Menifee Global Medical Center Menifee, CA · (951) 679-8888 B-LAB NUCLEIC ACID PROBE A+3 more lines at this price File of May 20, 2026 · source file | $20.00 | $20.00 | $9.00–$74.22 | — |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 RL-A-CDIFF PCR 2002838 File of Sep 30, 2026 · source file | $30.95 | $94.00 | $23.50–$143.20 | 67% |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 RL-A-CDIFF PCR 2002838 File of Sep 30, 2026 · source file | $36.56 | $94.00 | $18.80–$143.20 | 61% |
| Desert Valley Hospital Victorville, CA · (760) 241-8000 C DIFFICILE TOX AMP PROCE TECH+2 more lines at this price File of Sep 1, 2026 · source file | $37.00 | $288.79 | $17.10–$288.79 | 87% |
| Chino Valley Medical Center Chino, CA · (909) 627-6111 Hc Cytomed, Dna, Amp Probe File of Sep 1, 2026 · source file | $37.00 | $447.95 | $22.91–$447.95 | 92% |
| Montclair Hospital Medical Center Montclair, CA · (909) 625-8300 Hc Cytomed, Dna, Amp Probe File of Sep 1, 2026 · source file | $37.00 | $447.95 | $22.91–$447.95 | 92% |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Cdiff Pcr Confirmation+1 more line at this price File of Mar 30, 2026 · source file | $38.56 | $38.56 | $22.91–$43.33 | — |
| Hemet Global Medical Center Hemet, CA · (951) 652-2811 B-LAB FACTOR V NUCLEIC ACID PR File of Jun 15, 2026 · source file | $42.00 | $42.00 | $18.90–$123.36 | — |
| Menifee Global Medical Center Menifee, CA · (951) 679-8888 B-LAB FACTOR V NUCLEIC ACID PR File of May 20, 2026 · source file | $42.00 | $42.00 | $18.90–$123.36 | — |
| Riverside University Medical Center one side Moreno Valley, CA · (951) 486-4000 HC Qu C Diff Toxin B Ql Rt Pcr+1 more line at this price File of Mar 30, 2026 · source file | $47.12 | $47.12 | $22.91–$47.12 | — |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 IA CLOS DIFF TOXN AMP PRB File of Sep 30, 2026 · source file | $52.34 | $159.00 | $28.64–$159.00 | 67% |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 IA CLOS DIFF TOXN AMP PRB File of Sep 30, 2026 · source file | $75.44 | $194.00 | $28.64–$194.00 | 61% |
| Riverside Community Hospital Riverside, CA · (951) 788-3000 C DIFF TOX GENE AMP PROB File of Sep 1, 2026 · source file | $78.00 | $78.00 | $11.70–$70.20 | — |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC CDIFF NUCLEIC ACID TEST File of Sep 2, 2026 · source file | $87.30 | $194.00 | $30.19–$444.31 | 55% |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC CDIFF NUCLEIC ACID TEST File of Sep 2, 2026 · source file | $87.30 | $194.00 | $35.11–$408.72 | 55% |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC CDIFF NUCLEIC ACID TEST File of Sep 2, 2026 · source file | $87.30 | $194.00 | $30.19–$435.37 | 55% |
| Victor Valley Global Medical Center Victorville, CA · (760) 245-8691 DIFFICILE TOXIN GENE NAA - LC File of May 13, 2026 · source file | $93.00 | $93.00 | $22.32–$93.00 | — |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC SOM C DIFF PCR STOOL File of Sep 2, 2026 · source file | $96.00 | $96.00 | $19.20–$444.31 | — |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC SOM C DIFF PCR STOOL File of Sep 2, 2026 · source file | $96.00 | $96.00 | $19.20–$435.37 | — |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC SOM C DIFF PCR STOOL File of Sep 2, 2026 · source file | $96.00 | $96.00 | $17.38–$408.72 | — |
| St Mary Medical Center Apple Valley, CA · (760) 242-2311 HC CLOSTRIDIUM DIFFICILE TOXINS AMPLIFIED PROBE File of Apr 1, 2026 · source file | $123.84 | $258.00 | — | 52% |
| Redlands Community Hospital Redlands, CA · (909) 335-5500 Detection test by nucleic acid for clostridium difficile, amplified probe technique File of Jun 19, 2026 · source file | $133.92 | $558.00 | $31.68–$502.20 | 76% |
| Barstow Community Hospital Barstow, CA · (760) 256-1761 Detection test by nucleic acid for clostridium difficile, amplified probe technique File of Sep 17, 2026 · source file | $135.97 | $226.62 | $41.08–$181.30 | 40% |
| Victor Valley Global Medical Center Victorville, CA · (760) 245-8691 MOLECULAR CDIFF File of May 13, 2026 · source file | $139.00 | $139.00 | $22.81–$139.00 | — |
| San Bernardino County Colton, CA · (909) 580-1000 HC C.DIFF TOXIN B File of Feb 25, 2026 · source file | $149.00 | $149.00 | $28.64–$108.03 | — |
| Kaiser Foundation Hospital - Fontana Fontana, CA · (909) 427-5000 INF AGENT DET NUCLEIC ACID CLOSTRIDIUM AMP PROBE File of Apr 1, 2026 · source file | $152.88 | $294.00 | $25.00–$75.00 | 48% |
| Kaiser Foundation Hospital - Riverside Riverside, CA · (951) 353-2000 INF AGENT DET NUCLEIC ACID CLOSTRIDIUM AMP PROBE File of Apr 1, 2026 · source file | $152.88 | $294.00 | $25.00–$75.00 | 48% |
| Kaiser Foundation Hospital - Moreno Valley Moreno Valley, CA · (951) 251-6530 INF AGENT DET NUCLEIC ACID CLOSTRIDIUM AMP PROBE File of Apr 1, 2026 · source file | $152.88 | $294.00 | $25.00–$75.00 | 48% |
| Kaiser Ontario Medical Center Campus Ontario, CA · (909) 427-5000 INF AGENT DET NUCLEIC ACID CLOSTRIDIUM AMP PROBE File of Apr 1, 2026 · source file | $152.88 | $294.00 | $25.00–$75.00 | 48% |
| San Antonio Regional Hospital Upland, CA · (909) 985-2811 Detection test by nucleic acid for clostridium difficile, amplified probe technique File of Apr 2, 2026 · source file | $185.00 | $632.00 | $29.82–$1,161.30 | 71% |
| Palo Verde Hospital Blythe, CA · (760) 922-4115 C difficile Toxin Gene NAA LC File of Jul 1, 2026 · source file | $236.25 | $315.00 | — | 25% |
| Riverside Community Hospital Riverside, CA · (951) 788-3000 C DIFF TOX B NAP1 ST AMP File of Sep 1, 2026 · source file | $369.75 | $369.75 | $55.46–$332.77 | — |
| San Bernardino County Colton, CA · (909) 580-1000 HC C.DIFF TOXIN GENE(S), PCR File of Feb 25, 2026 · source file | $731.00 | $731.00 | $28.64–$529.98 | — |
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 $18.96, median $87.30, highest $236.25 — a 12.5× difference within the same market.
As an inpatient, the same code is billed by 16 facilities here, median $90.15. 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 15 of 22 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 C. diff test is, what the price covers and why prices differ: C. diff test explained.
1 row held back from this comparison
It is priced below $1 or below a tenth of the national median for code 87493 ($122.95). 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 |
|---|---|---|
| Eisenhower Medical Center Rancho Mirage, CAHC C Difficle Dna Amplification | $11.88 | file |
File Link to the hospital's own price file.