Ammonia test cost in Fort Smith, AR
In Fort Smith, AR-OK, 4 hospitals list a cash price for ammonia blood test: from $39.00 to $54.34, with a median of $45.86. The lowest listed price is at Mercy Orthopedic Hospital Fort Smith and 1 other hospital — $6.86 less than the median here. Across Arkansas, the median is $54.34 at 49 hospitals.
Cash prices at 4 facilities across 2 cities for code 82140, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 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 Fort Smith, AR-OK.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Mercy Orthopedic Hospital Fort Smith lowest Fort Smith, AR · (479) 314-6000 Ammonia | $39.00 | $60.00 | $13.21–$51.00 | 35% | — source file |
| Mercy Hospital Fort Smith lowest Fort Smith, AR · (479) 314-6000 Ammonia | $39.00 | $60.00 | $13.21–$51.00 | 35% | — source file |
| Baptist Health - Fort Smith Fort Smith, AR · (479) 441-4000 82140 - ASSAY OF AMMONIA | $52.72 | $210.89 | $14.57–$31.82 | 75% | — source file |
| Baptist Health - Van Buren Van Buren, AR · (479) 474-3401 82140 - ASSAY OF AMMONIA | $54.34 | $217.36 | $14.57–$31.82 | 75% | — source file |
| Mercy Orthopedic Hospital Fort Smith Fort Smith, AR · (479) 314-6000 Stone Risk Ua Ammonia | $124.15 | $191.00 | $11.93–$39.93 | 35% | — source file |
| Mercy Hospital Fort Smith Fort Smith, AR · (479) 314-6000 Stone Risk Ua Ammonia | $124.15 | $191.00 | $11.93–$39.93 | 35% | — source file |
Outpatient: lowest $39.00, median $45.86, highest $54.34 — a 1.4× difference within the same market.
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 none is it 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 ammonia test measures ammonia in the blood. It is used for confusion or drowsiness in people with liver disease and for some rare inherited disorders in newborns.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.