H. pylori stool test cost in St. Louis, MO
In St. Louis, MO-IL, 12 hospitals list a cash price for H. pylori stool antigen test: from $14.64 to $619.20, with a median of $109.35. The lowest listed price is at Ranken Jordan Pediatric Bridge Hospital — $94.71 less than the median here. Across Missouri, the median is $118.36 at 61 hospitals.
- The median here, $109.35, is 16% above the US median of $94.17.
- That is 7.6× Medicare's 2026 national rate for the same service ($14.38).
- St. Louis, MO has the lowest median of 2 metro areas in Missouri with at least 10 hospitals pricing this code.
- Every hospital here lists a cash price below its full list price.
Cash prices at 12 facilities across 11 cities for code 87338, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 6, 2026 and Jun 10, 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 St. Louis, MO-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Ranken Jordan Pediatric Bridge Hospital lowest Maryland Heights, MO · (314) 872-6400 Helicobacter pylori Antigen, EIA, Stool File of Apr 24, 2026 · source file | $14.64 | $18.29 | — | 20% |
| Touchette Regional Hospital Cahokia Heights, IL · (618) 332-3060 Infectious agent antigen detection by immunoassay technique (eg, enzyme immunoassay [EIA], enzyme-linked immunosorbent assay [ELISA], fluorescence immunoassay [FIA], immunochemiluminometric assay [IMCA]), qualitative or semiquantitative; Helicobacter pylori, stool File of Apr 13, 2026 · source file | $27.59 | $44.50 | $1.68–$42.00 | 38% |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Helicobacter Pylori Stool Eia File of Jun 10, 2026 · source file | $85.80 | $132.00 | $8.58–$132.00 | 35% |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 Helicobacter Pylori Stool Eia File of Jun 4, 2026 · source file | $90.35 | $139.00 | $9.95–$32.36 | 35% |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 HPYLORI STOOL AG File of Feb 9, 2026 · source file | $97.05 | $194.10 | $56.11–$176.63 | 50% |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Helicobacter Pylori Stool Eia File of Jun 10, 2026 · source file | $108.55 | $167.00 | $10.86–$167.00 | 35% |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 Q34838 HPYLAG EIA IA+1 more line at this price File of Mar 30, 2026 · source file | $110.14 | $183.56 | $183.56 | 40% |
| Anderson Hospital Maryville, IL · (618) 288-5711 HPYLORI STOOL AG File of Feb 6, 2026 · source file | $112.70 | $225.40 | $12.44–$202.86 | 50% |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 Helicobacter Pylori Stool Eia File of Jun 10, 2026 · source file | $141.70 | $218.00 | $9.95–$21.35 | 35% |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 Helicobacter Pylori Stool Eia File of Jun 10, 2026 · source file | $156.65 | $241.00 | $9.95–$32.36 | 35% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 H PYLORI STOOL ANTIGEN File of Mar 21, 2026 · source file | $191.80 | $274.00 | $98.64–$391.43 | 30% |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 HC EIA QL H PYLORI AG STOOL-90 File of Mar 24, 2026 · source file | $619.20 | $860.00 | $7.78–$860.00 | 28% |
Outpatient: lowest $14.64, median $109.35, highest $619.20 — a 42.3× difference within the same market.
As an inpatient, the same code is billed by 6 facilities here, median $111.42. 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 8 of 11 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 H. pylori stool test is, what the price covers and why prices differ: H. pylori stool test explained.