Aldosterone test cost in St. Louis, MO — inpatient
In St. Louis, MO-IL, 8 hospitals list a cash price for aldosterone blood test as an inpatient: from $141.20 to $583.30, with a median of $222.30. The lowest listed price is at Mercy Rehabilitation Hospital South — $81.10 less than the median here. Across Missouri, the median is $157.30 at 61 hospitals.
Cash prices at 8 facilities across 7 cities for code 82088, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Feb 6, 2026 and Aug 6, 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 ALDOSTERONE SERUM | $141.20 | $141.20 | $141.20 | — | Mar 16, 2026 source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 HC ALDOSTERONE-90 | $174.24 | $242.00 | $25.81–$242.00 | 28% | — source file |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 ASSAY OF ALDOSTERONE | $197.00 | $394.00 | $334.90–$358.54 | 50% | Feb 9, 2026 source file |
| Anderson Hospital Maryville, IL · (618) 288-5711 ASSAY OF ALDOSTERONE | $208.70 | $417.40 | $313.05–$375.66 | 50% | Feb 6, 2026 source file |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 URINE 24 HR ALDOSTERONE REF | $235.90 | $337.00 | $209.61–$3,396.04 | 30% | — source file |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 ALDOSTERONE/RENIN RATIO(REF) | $283.50 | $405.00 | $251.91–$3,396.04 | 30% | — source file |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 ALDOSTERONE(REF) | $283.50 | $405.00 | $251.91–$3,396.04 | 30% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 Q229 ALDOSTERONE U24 | $352.47 | $587.45 | $587.45 | 40% | — source file |
| Mercy Rehabilitation Hospital St. Louis Chesterfield, MO ALDOSTERONE SERUM | $393.52 | $393.52 | $393.52 | — | Mar 16, 2026 source file |
| St Lukes Rehabilitation Hospital Chesterfield, MO Aldosterone | $583.30 | $583.30 | $408.31–$437.48 | — | Aug 6, 2026 source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 ALDOSTERONE | $1,419.82 | $2,366.36 | $2,366.36 | 40% | — source file |
Inpatient: lowest $141.20, median $222.30, highest $583.30 — a 4.1× difference within the same market.
As an outpatient, the same code is billed by 12 facilities here, median $191.78 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 5 of 8 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 3 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
An aldosterone test measures an adrenal hormone that controls salt and blood pressure. It is ordered with renin for high blood pressure that is hard to control or low potassium.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.