Potassium test cost in Kansas City, MO
In Kansas City, MO-KS, 21 hospitals list a cash price for potassium blood test: from $4.00 to $505.55, with a median of $109.30. The lowest listed price is at Providence Medical Center and 2 other hospitals — $105.30 less than the median here. Across Missouri, the median is $41.32 at 64 hospitals.
Cash prices at 21 facilities across 14 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 Mar 6, 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 Kansas City, MO-KS.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Providence Medical Center lowest Kansas City, KS · (913) 596-4000 Hc Assay Of Serum Potassium File of Mar 17, 2026 · source file | $4.00 | $105.60 | $4.20–$97.57 | 96% |
| St Joseph Medical Center lowest Kansas City, MO · (816) 942-4400 Hc Assay Of Serum Potassium File of Mar 17, 2026 · source file | $4.00 | $98.67 | $4.20–$98.67 | 96% |
| Saint John Hospital lowest Leavenworth, KS · (913) 680-6000 Hc Assay Of Serum Potassium File of Mar 17, 2026 · source file | $4.00 | $84.72 | $4.20–$67.78 | 95% |
| Ascentist Hospital Leawood, KS · (913) 529-1801 POTASSIUM, SERUM source file | $8.57 | $30.00 | $7.90–$10.23 | 71% |
| Liberty Hospital Liberty, MO · (816) 781-7200 LAB ASSAY OF SERUM POTASS+2 more lines at this price source file | $17.00 | $63.00 | $17.58–$51.41 | 73% |
| NKC Health North Kansas City, MO · (816) 691-2000 POTASSIUM LEVEL+2 more lines at this price File of Mar 6, 2026 · source file | $17.98 | $62.00 | $4.41–$50.72 | 71% |
| Children's Mercy Hospital Kansas Overland Park, KS · (913) 696-8000 WHOLE BLOOD K MAIN+2 more lines at this price source file | $26.88 | $56.00 | $4.28–$50.40 | 52% |
| Children's Mercy Hospital Kansas City, MO · (816) 234-3000 POTASSIUM BLOOD CMK+2 more lines at this price source file | $26.88 | $56.00 | $4.41–$50.40 | 52% |
| Cass Regional Medical Center Harrisonville, MO · (816) 380-5888 84132 POTASSIUM, SERUM File of Apr 7, 2026 · source file | $43.40 | $62.00 | $4.76–$60.08 | 30% |
| Bates County Memorial Hospital Butler, MO · (660) 200-7000 POTASSIUM File of Apr 20, 2026 · source file | $79.50 | $113.57 | $4.76–$96.53 | 30% |
| Rehabilitation Hospital of Overland Park Overland Park, KS Serum Potassium File of Aug 6, 2026 · source file | $109.30 | $109.30 | $3.81–$98.37 | — |
| AdventHealth South Overland Park Overland Park, KS · (913) 373-2000 HC POTASSIUM LEVEL File of Apr 1, 2026 · source file | $185.01 | $185.01 | — | — |
| AdventHealth Shawnee Mission Shawnee Mission, KS · (913) 676-2152 HC POTASSIUM LEVEL File of Apr 1, 2026 · source file | $185.01 | $185.01 | — | — |
| Lafayette Regional Health Center Lexington, MO · (660) 259-2203 Potassium; serum, plasma or whole blood +1 more line at this price File of Sep 1, 2026 · source file | $214.75 | $214.75 | $4.76–$214.75 | — |
| Lee's Summit Medical Center Lee's Summit, MO · (816) 282-5000 POTASSIUM BLD+1 more line at this price File of Sep 1, 2026 · source file | $318.55 | $318.55 | $2.56–$270.77 | — |
| Research Medical Center Kansas City, MO · (816) 276-4000 Potassium; serum, plasma or whole blood +1 more line at this price File of Sep 1, 2026 · source file | $345.86 | $345.86 | $2.56–$345.86 | — |
| Research Psychiatric Center Kansas City, MO POTASSIUM BLD+1 more line at this price File of Sep 1, 2026 · source file | $345.86 | $345.86 | $2.56–$345.86 | — |
| Menorah Medical Center Overland Park, KS · (913) 498-6000 POTASSIUM BLD+1 more line at this price File of Sep 1, 2026 · source file | $379.25 | $379.25 | $2.56–$303.40 | — |
| Overland Park Regional Medical Center Olathe, KS · (913) 541-5000 POTASSIUM BLD File of Sep 1, 2026 · source file | $380.26 | $380.26 | $49.43–$285.19 | — |
| Belton Regional Medical Center Kansas City, MO · (816) 348-1200 Potassium; serum, plasma or whole blood +1 more line at this price File of Sep 1, 2026 · source file | $401.20 | $401.20 | $2.56–$361.08 | — |
| Centerpoint Medical Center Independence, MO · (816) 698-7000 Potassium; serum, plasma or whole blood +1 more line at this price File of Sep 1, 2026 · source file | $505.55 | $505.55 | $2.56–$455.00 | — |
Outpatient: lowest $4.00, median $109.30, highest $505.55 — a 126.4× difference within the same market.
As an inpatient, the same code is billed by 10 facilities here, median $35.14. 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 10 of 19 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 4 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
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.