H. pylori stool test cost in St. Louis, MO — inpatient
In St. Louis, MO-IL, 5 hospitals list a cash price for H. pylori stool antigen test as an inpatient: from $14.64 to $619.20, with a median of $110.14. The lowest listed price is at Ranken Jordan Home for Convalescent Crippled Children Hospital — $95.50 less than the median here. Across Missouri, the median is $118.30 at 26 hospitals.
Cash prices at 5 facilities across 5 cities for code 87338, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 16, 2026 and Apr 24, 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 | File date |
|---|---|---|---|---|---|
| Ranken Jordan Home for Convalescent Crippled Children Hospital lowest Maryland Heights, MO · (314) 872-6400 Helicobacter pylori Antigen, EIA, Stool | $14.64 | $18.29 | — | 20% | Apr 24, 2026 source file |
| Mercy Rehabilitation Hospital South Louis, MO HELICOBACTER PYLORI, STOOL | $49.82 | $49.82 | $49.82 | — | Mar 16, 2026 source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 Q34838 HPYLAG EIA IA | $110.14 | $183.56 | $183.56 | 40% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 HPYLORI,STOOL,EIA | $110.14 | $183.56 | $183.56 | 40% | — source file |
| Mercy Rehabilitation Hospital St. Louis Chesterfield, MO HELICOBACTER PYLORI, STOOL | $161.01 | $161.01 | $161.01 | — | Mar 16, 2026 source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 HC EIA QL H PYLORI AG STOOL-90 | $619.20 | $860.00 | $7.78–$860.00 | 28% | — source file |
Inpatient: lowest $14.64, median $110.14, highest $619.20 — a 42.3× difference within the same market.
As an outpatient, the same code is billed by 8 facilities here, median $109.35 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 2 of 4 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 stool test finds H. pylori, the stomach bacteria behind most ulcers. It shows an active infection and is used both to diagnose it and to confirm a cure.
What the price covers
The price usually covers running the stool test; the collection kit is often included.