Potassium test cost in Joplin, MO
In Joplin, MO-KS, 6 hospitals list a cash price for potassium blood test: from $42.63 to $66.95, with a median of $45.83. The lowest listed price is at Freeman Health System - Freeman West and 1 other hospital — $3.20 less than the median here. Across Missouri, the median is $41.32 at 64 hospitals.
Cash prices at 6 facilities across 5 cities for code 84132, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Sep 1, 2026 and Sep 1, 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 Joplin, MO-KS.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Freeman Health System - Freeman West lowest Joplin, MO · (417) 347-1111 POTASSIUM SERUM File of Sep 1, 2026 · source file | $42.63 | $106.58 | — | 60% |
| Freeman Neosho Hospital lowest Neosho, MO · (417) 451-1234 POTASSIUM SERUM File of Sep 1, 2026 · source file | $42.63 | $106.58 | — | 60% |
| Mercy Hospital Carthage Carthage, MO · (417) 358-8121 Potassium Plasma/Wb source file | $42.90 | $66.00 | $18.13–$66.00 | 35% |
| Mercy Hospital Columbus Columbus, KS · (620) 429-2545 Potassium Plasma/Wb source file | $48.75 | $75.00 | $4.23–$12.87 | 35% |
| Mercy Hospital Columbus Columbus, KS · (620) 429-2545 POC Potassium Ser Plasma Wb source file | $52.65 | $81.00 | $4.23–$12.87 | 35% |
| Mercy Specialty Hospital Southeast Kansas Galena, KS · (620) 783-1732 POC Potassium Ser Plasma Wb source file | $54.60 | $84.00 | $3.76–$28.27 | 35% |
| Mercy Hospital Joplin Joplin, MO · (417) 781-2727 POC Potassium Ser Plasma Wb+1 more line at this price source file | $66.95 | $103.00 | $3.88–$28.56 | 35% |
Outpatient: lowest $42.63, median $45.83, highest $66.95 — a 1.6× difference within the same market.
As an inpatient, the same code is billed by 2 facilities here, median $42.63. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 1 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.