Calprotectin test cost in St. Louis, MO — inpatient
In St. Louis, MO-IL, 2 hospitals list a cash price for fecal calprotectin (stool inflammation test) as an inpatient: from $237.45 to $256.32, with a median of $246.89. The lowest listed price is at American Healthcare Systems Illinois LLC — $9.44 less than the median here. Across Missouri, the median is $167.70 at 24 hospitals.
Cash prices at 2 facilities across 2 cities for code 83993, as an inpatient (admitted to hospital) . 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 |
|---|---|---|---|---|---|
| American Healthcare Systems Illinois LLC lowest Granite City, IL Q16796 CALPRO STL IA | $237.45 | $395.75 | $395.75 | 40% | — source file |
| American Healthcare Systems Illinois LLC lowest Granite City, IL CALPROTECTIN FECAL | $237.45 | $395.75 | $395.75 | 40% | — source file |
| Hshs Holy Family Hospital Inc Greenville, IL HC CALPROTECTIN STOOL-90 | $256.32 | $356.00 | $8.82–$356.00 | 28% | — source file |
Inpatient: lowest $237.45, median $246.89, highest $256.32 — a 1.1× difference within the same market.
As an outpatient, the same code is billed by 8 facilities here, median $171.28 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 2 of 2 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
Fecal calprotectin measures a protein released by inflamed bowel. It helps tell inflammatory bowel disease from irritable bowel syndrome.
What the price covers
The price usually covers running the stool test; the collection kit is often included.