BNP test cost in St. Louis, MO — inpatient
In St. Louis, MO-IL, 7 hospitals list a cash price for BNP or NT-proBNP blood test (heart failure marker) as an inpatient: from $136.04 to $303.12, with a median of $236.88. The lowest listed price is at Mercy Rehabilitation Hospital South — $100.84 less than the median here. Across Missouri, the median is $113.75 at 27 hospitals.
Cash prices at 7 facilities across 7 cities for code 83880, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 16, 2026 and Mar 16, 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 |
|---|---|---|---|---|---|
| Mercy Rehabilitation Hospital South lowest Louis, MO B-TYPE NATRIURETIC PEPTID | $136.04 | $136.04 | $136.04 | — | Mar 16, 2026 source file |
| Mercy Rehabilitation Hospital South lowest Louis, MO NT-PRO BNP | $136.04 | $136.04 | $136.04 | — | Mar 16, 2026 source file |
| Mercy Rehabilitation Hospital South lowest Louis, MO BNP (B NATRIURETIC PEPTIDE) | $136.04 | $136.04 | $136.04 | — | Mar 16, 2026 source file |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL HC BNP NATRIURETIC PEPTIDE | $154.80 | $215.00 | $19.79–$215.00 | 28% | — source file |
| American Healthcare Systems Illinois LLC Granite City, IL NATRIURETIC PEPTIDE | $167.73 | $279.55 | $279.55 | 40% | — source file |
| St Josephs Hospital Hospital Sisters Third Order of St Francis Breese, IL HC BNP NATRIURETIC PEPTIDE | $236.88 | $329.00 | $19.79–$329.00 | 28% | — source file |
| St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland, IL HC BNP NATRIURETIC PEPTIDE | $246.96 | $343.00 | $46.07–$343.00 | 28% | — source file |
| Mercy Rehabilitation Hospital St. Louis Chesterfield, MO NT-PRO BNP | $252.49 | $252.49 | $252.49 | — | Mar 16, 2026 source file |
| Mercy Rehabilitation Hospital St. Louis Chesterfield, MO BNP (B NATRIURETIC PEPTIDE) | $252.49 | $252.49 | $252.49 | — | Mar 16, 2026 source file |
| Mercy Rehabilitation Hospital St. Louis Chesterfield, MO B-TYPE NATRIURETIC PEPTID | $254.41 | $254.41 | $254.41 | — | Mar 16, 2026 source file |
| Hshs Holy Family Hospital Inc Greenville, IL HC BNP NATRIURETIC PEPTIDE | $303.12 | $421.00 | $20.78–$421.00 | 28% | — source file |
Inpatient: lowest $136.04, median $236.88, highest $303.12 — a 2.2× difference within the same market.
As an outpatient, the same code is billed by 11 facilities here, median $162.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 5 of 7 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 code covers the natriuretic peptide tests, BNP and NT-proBNP. The heart releases these peptides when it is under strain, so the test helps tell heart failure from other causes of shortness of breath and tracks treatment.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.