Potassium test cost in Grand Rapids, MI
In Grand Rapids-Wyoming-Kentwood, MI, 8 hospitals list a cash price for potassium blood test: from $9.00 to $49.00, with a median of $19.00. The lowest listed price is at University of Michigan Health-Sparrow Carson — $10.00 less than the median here. Across Michigan, the median is $22.10 at 87 hospitals.
Cash prices at 8 facilities across 7 cities for code 84132, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 28, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Mar 31, 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 Grand Rapids-Wyoming-Kentwood, MI.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| University of Michigan Health-Sparrow Carson lowest Carson City, MI · (989) 584-3131 HB Assay of Serum Potassium | $9.00 | $36.00 | $27.37–$29.16 | 75% | — source file |
| Corewell Health Zeeland Community Hospital Zeeland, MI · (616) 772-4644 Hc Potassium Level | $19.00 | $19.00 | — | — | — source file |
| Corewell Health Greenville Hospital Greenville, MI · (616) 754-4691 Hc Potassium Level | $19.00 | $19.00 | — | — | — source file |
| Corewell Health Butterworth Hospital Grand Rapids, MI · (616) 391-1774 Hc Potassium Level | $19.00 | $19.00 | — | — | — source file |
| Corewell Health Butterworth Hospital Grand Rapids, MI · (616) 391-1774 Hc Potassium Level | $19.00 | $19.00 | — | — | — source file |
| Corewell Health Blodgett Hospital East Grand Rapids, MI Hc Potassium Level | $19.00 | $19.00 | — | — | — source file |
| Corewell Health Butterworth Hospital Grand Rapids, MI · (616) 391-1774 Hc Poc Potassium | $28.00 | $28.00 | — | — | — source file |
| Corewell Health Greenville Hospital Greenville, MI · (616) 754-4691 Hc Poc Potassium | $28.00 | $28.00 | — | — | — source file |
| Corewell Health Blodgett Hospital East Grand Rapids, MI Hc Poc Potassium | $28.00 | $28.00 | — | — | — source file |
| Corewell Health Zeeland Community Hospital Zeeland, MI · (616) 772-4644 Hc Poc Potassium | $28.00 | $28.00 | — | — | — source file |
| Corewell Health Butterworth Hospital Grand Rapids, MI · (616) 391-1774 Hc Poc Potassium | $28.00 | $28.00 | — | — | — source file |
| Mercy Health Saint Marys Grand Rapids, MI · (616) 685-5000 HC Potassium Serum/Plasma/Whole Blood | $29.90 | $46.00 | $1.70–$46.00 | 35% | Mar 31, 2026 source file |
| Sheridan Community Hospital Sheridan, MI · (989) 291-3261 POTASSIUM | $40.80 | $51.00 | $3.44–$45.03 | 20% | — source file |
| Mercy Health Saint Marys Grand Rapids, MI · (616) 685-5000 HC Warde Potassium Serum/Plasma/Whole Blood | $41.24 | $63.44 | $1.70–$63.44 | 35% | Mar 31, 2026 source file |
| Mercy Health Saint Marys Grand Rapids, MI · (616) 685-5000 HC Potassium Serum/Plasma/Whole Blood | $42.25 | — | $1.70–$28.39 | — | Mar 31, 2026 source file |
| Trinity Health Grand Haven Hospital Grand Haven, MI · (616) 847-5268 POTASSIUM | $49.00 | $49.00 | $2.60–$49.00 | — | — source file |
Outpatient: lowest $9.00, median $19.00, highest $49.00 — a 5.4× difference within the same market.
As an inpatient, the same code is billed by 8 facilities here, median $24.00. 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 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 1 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.