Trichomoniasis test cost in St. Louis, MO
In St. Louis, MO-IL, 10 hospitals list a cash price for trichomonas test (NAAT): from $38.16 to $227.52, with a median of $99.78. The lowest listed price is at St Josephs Hospital Hospital Sisters Third Order of St Francis — $61.62 less than the median here. Across Missouri, the median is $107.25 at 25 hospitals.
Cash prices at 10 facilities across 9 cities for code 87661, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between — and —.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in St. Louis, MO-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| St Josephs Hospital Hospital Sisters Third Order of St Francis lowest Breese, IL · (618) 526-4511 HC TRICHOMONAS VAG AMP PROBE | $38.16 | $53.00 | $14.84–$87.73 | 28% | — source file |
| Mercy Hospital Washington Washington, MO Trichomonal Vaginalis Amp Probe | $56.55 | $87.00 | $5.66–$78.30 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Trichomonal Vaginalis Amp Probe | $56.55 | $87.00 | $31.58–$78.95 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO Trichomonal Vaginalis Amp Probe | $78.65 | $121.00 | $31.58–$78.95 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Trichomonal Vaginalis Amp Probe | $92.30 | $142.00 | $31.55–$78.95 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Trichomonal Vaginalis Amp Probe | $107.25 | $165.00 | $10.73–$165.00 | 35% | — source file |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL HC TRICHOMONAS VAG AMP PROBE | $163.44 | $227.00 | $30.13–$227.00 | 28% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 T VAGINALIS AMP | $167.73 | $279.55 | $279.55 | 40% | — source file |
| St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland, IL · (618) 651-2600 HC TRICHOMONAS VAG AMP PROBE | $193.68 | $269.00 | $53.80–$269.00 | 28% | — source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 TRICHOMONAS VAGINALIS AMPLIF | $227.52 | $316.00 | $31.63–$316.00 | 28% | — source file |
Outpatient: lowest $38.16, median $99.78, highest $227.52 — a 6.0× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $167.73. 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 9 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 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
This test detects Trichomonas vaginalis, a common and curable sexually transmitted parasite, in a swab or urine sample.
What the price covers
The price usually covers running the test on a swab or urine sample.