Potassium test cost in Fort Smith, AR
In Fort Smith, AR-OK, 4 hospitals list a cash price for potassium blood test: from $10.89 to $16.25, with a median of $13.59. The lowest listed price is at Baptist Health - Fort Smith — $2.70 less than the median here. Across Arkansas, the median is $19.65 at 49 hospitals.
Cash prices at 4 facilities across 2 cities for code 84132, 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 |
|---|---|---|---|---|---|
| Baptist Health - Fort Smith lowest Fort Smith, AR · (479) 441-4000 84132 - POTASSIUM SERUM PLASMA-WHOLE BLOOD | $10.89 | $43.54 | $4.76–$10.39 | 75% | — source file |
| Baptist Health - Van Buren Van Buren, AR · (479) 474-3401 84132 - POTASSIUM SERUM PLASMA-WHOLE BLOOD | $10.92 | $43.68 | $4.76–$12.33 | 75% | — source file |
| Mercy Orthopedic Hospital Fort Smith Fort Smith, AR · (479) 314-6000 Potassium Plasma/Wb | $16.25 | $25.00 | $4.23–$20.99 | 35% | — source file |
| Mercy Hospital Fort Smith Fort Smith, AR · (479) 314-6000 Potassium Plasma/Wb | $16.25 | $25.00 | $4.23–$20.99 | 35% | — source file |
| Mercy Orthopedic Hospital Fort Smith Fort Smith, AR · (479) 314-6000 POC Potassium Ser Plasma Wb | $52.00 | $80.00 | $17.62–$68.00 | 35% | — source file |
| Mercy Hospital Fort Smith Fort Smith, AR · (479) 314-6000 POC Potassium Ser Plasma Wb | $52.00 | $80.00 | $17.62–$68.00 | 35% | — source file |
Outpatient: lowest $10.89, median $13.59, highest $16.25 — a 1.5× difference within the same market.
Cash or insurance?
At 3 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
A potassium test measures the level of potassium in the blood. Doctors check it for people on diuretics or blood pressure drugs, with kidney disease, an irregular heartbeat, or vomiting and diarrhea.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.