Potassium test cost in Detroit, MI
In Detroit-Warren-Dearborn, MI, 30 hospitals list a cash price for potassium blood test: from $5.70 to $76.50, with a median of $22.10. The lowest listed price is at Karmanos Cancer Center — $16.40 less than the median here. Across Michigan, the median is $22.53 at 88 hospitals.
Cash prices at 30 facilities across 21 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 Dec 31, 2025 and Sep 2, 2026.
Lowest$5.70Karmanos Cancer Center
Median$22.10half of hospitals charge less
Highest$76.50in this market
Difference13.4×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Detroit-Warren-Dearborn, MI.
median
Lowest $5.70Highest $251.55
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Karmanos Cancer Center lowest Detroit, MI · (800) 576-6266 ASSAY OF SERUM POTASSIUM File of Dec 31, 2025 · source file | $5.70 | $11.40 | $2.60–$8.55 | 50% |
| Henry Ford Health West Bloomfield Hospital West Bloomfield, MI · (248) 325-1000 HB LAB POTASSIUM SERUM WHOLE BLOOD File of Jun 28, 2026 · source file | $6.57 | $31.00 | $2.49–$16.74 | 79% |
| Henry Ford Wyandotte Hospital Wyandotte, MI · (734) 246-6000 HB LAB POTASSIUM SERUM WHOLE BLOOD File of Jun 28, 2026 · source file | $6.57 | $31.00 | $2.49–$16.74 | 79% |
| Henry Ford Health Hospital Detroit, MI · (313) 916-2600 HB LAB POTASSIUM SERUM WHOLE BLOOD File of Jun 28, 2026 · source file | $6.57 | $31.00 | $3.88–$6.57 | 79% |
| Henry Ford Macomb Hospital Clinton Twp, MI · (586) 263-2300 HB LAB POTASSIUM SERUM PLASMA BL SO POTR+1 more line at this price File of Jun 28, 2026 · source file | $6.57 | $31.00 | $2.49–$18.36 | 79% |
| McLaren Port Huron Port Huron, MI · (810) 987-5000 ASSAY OF SERUM POTASSIUM File of Dec 31, 2025 · source file | $8.30 | $16.60 | $2.60–$8.43 | 50% |
| Henry Ford Providence Southfield Hospital Southfield, MI · (248) 849-3000 POTASSIUM SERUM/PLASMA/WB+1 more line at this price source file | $8.40 | $15.00 | $1.01–$8.26 | 44% |
| Henry Ford Rochester Hospital Rochester, MI · (248) 652-5000 POTASSIUM source file | $8.46 | $18.00 | $5.65–$5.94 | 53% |
| McLaren Port Huron Port Huron, MI · (810) 987-5000 Potassium Level+1 more line at this price File of Dec 31, 2025 · source file | $8.60 | $17.20 | $2.60–$9.86 | 50% |
| Henry Ford Providence Novi Hospital - Novi Campus Novi, MI · (248) 849-3000 POTASSIUM SERUM/PLASMA/WB+1 more line at this price source file | $9.52 | $17.00 | $0.94–$8.26 | 44% |
| Henry Ford Health St John Hospital Detroit, MI · (313) 343-4000 POTASSIUM SERUM/PLASMA/WB+1 more line at this price source file | $10.08 | $18.00 | $5.87–$7.38 | 44% |
| Ascension River District Hospital East China Township, MI · (810) 329-7111 POTASSIUM, SERUM/PLASMA/WB+1 more line at this price source file | $14.76 | $26.36 | $5.87–$7.38 | 44% |
| Surgeons Choice Medical Center Southfield, MI POTASSIUM K REF source file | $15.00 | $15.00 | $4.19–$4.66 | — |
| McLaren Oakland Pontiac, MI · (248) 338-5000 Potassium Level POC+2 more lines at this price File of Dec 31, 2025 · source file | $15.75 | $31.50 | $2.60–$24.33 | 50% |
| McLaren Macomb Mount Clemens, MI · (586) 493-8000 Potassium Level+1 more line at this price File of Dec 31, 2025 · source file | $16.75 | $33.50 | $2.60–$20.69 | 50% |
| Karmanos Cancer Center Detroit, MI · (800) 576-6266 ELECTROLYTES PANEL-POTASS+5 more lines at this price File of Dec 31, 2025 · source file | $19.60 | $39.20 | $2.60–$29.40 | 50% |
| St Joseph Mercy Oakland Pontiac, MI · (248) 858-3000 HC Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $22.10 | $34.00 | $1.70–$34.00 | 35% |
| St Mary Mercy Livonia Livonia, MI · (734) 655-4800 HC Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $22.10 | $34.00 | $1.70–$34.00 | 35% |
| St Joseph Mercy Livingston Hospital Brighton, MI · (517) 545-6000 HC Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $22.10 | $34.00 | $1.70–$34.00 | 35% |
| VHS Huron Valley-Sinai Hospital Commerce Charter Twp, MI · (248) 937-3370 POTASSIUM SERUM File of May 20, 2026 · source file | $24.75 | $33.00 | $4.76–$16.13 | 25% |
| McLaren Lapeer Region Lapeer, MI · (810) 667-5500 Potassium Arterial+2 more lines at this price File of Dec 31, 2025 · source file | $28.30 | $56.60 | $2.60–$24.11 | 50% |
| Beaumont Hospital, Troy Troy, MI · (248) 964-8800 Hc Potassium Level source file | $29.00 | $29.00 | — | — |
| Corewell Health Trenton Hospital Trenton, MI · (734) 671-3800 Hc Potassium Level source file | $29.00 | $29.00 | — | — |
| Beaumont Hospital - Grosse Pointe Grosse Pointe, MI · (313) 473-1000 Hc Potassium Level source file | $29.00 | $29.00 | — | — |
| Corewell Health Wayne Hospital Wayne, MI · (734) 467-4175 Hc Potassium Level source file | $29.00 | $29.00 | — | — |
| Beaumont Hospital - Taylor Taylor, MI · (313) 295-5000 Hc Potassium Level source file | $29.00 | $29.00 | — | — |
| Surgeons Choice Medical Center Southfield, MI POTASSIUM source file | $29.00 | $29.00 | $4.19–$4.66 | — |
| Henry Ford Rochester Hospital Rochester, MI · (248) 652-5000 RL POTASSIUM RBC source file | $38.07 | $81.00 | $5.65–$5.94 | 53% |
| Henry Ford Health Warren Hospital Warren, MI · (586) 573-5000 POTASSIUM, SERUM/PLASMA/WB+1 more line at this price source file | $38.08 | $68.00 | $5.87–$7.38 | 44% |
| St Joseph Mercy Livingston Hospital Brighton, MI · (517) 545-6000 HC Warde Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $41.24 | $63.44 | $1.70–$63.44 | 35% |
| St Mary Mercy Livonia Livonia, MI · (734) 655-4800 HC Warde Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $41.24 | $63.44 | $1.70–$63.44 | 35% |
| St Joseph Mercy Oakland Pontiac, MI · (248) 858-3000 HC Warde Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $41.24 | $63.44 | $1.70–$63.44 | 35% |
| Karmanos Cancer Center Detroit, MI · (800) 576-6266 POC POTASSIUM File of Dec 31, 2025 · source file | $46.05 | $92.10 | $2.60–$69.07 | 50% |
| Karmanos Cancer Center Detroit, MI · (800) 576-6266 POTASSIUM SERUM File of Dec 31, 2025 · source file | $46.90 | $93.80 | $2.60–$70.35 | 50% |
| Harper University Hospital Detroit, MI · (313) 745-6211 BMP LYTES POTASSIUM+1 more line at this price File of Sep 2, 2026 · source file | $49.50 | $66.00 | $4.76–$16.13 | 25% |
| Karmanos Cancer Center Detroit, MI · (800) 576-6266 POTASSIUM File of Dec 31, 2025 · source file | $49.55 | $99.10 | $2.60–$74.32 | 50% |
| St Joseph Mercy Livingston Hospital Brighton, MI · (517) 545-6000 HC Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $57.20 | — | $1.70–$16.59 | — |
| RIM - Rehabilitation Institute of Michigan Detroit, MI POTASSIUM SERUM File of Apr 8, 2026 · source file | $57.75 | $77.00 | — | 25% |
| VHS Sinai Grace Hospital Detroit, MI · (313) 966-3300 POC POTASSIUM File of Apr 8, 2026 · source file | $66.00 | $88.00 | — | 25% |
| St Mary Mercy Livonia Livonia, MI · (734) 655-4800 HC Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $66.30 | — | $1.70–$17.99 | — |
| VHS Childrens Hospital of Michigan Detroit, MI · (313) 745-5437 POTASSIUM SERUM File of Apr 6, 2026 · source file | $72.75 | $97.00 | — | 25% |
| Harper University Hospital Detroit, MI · (313) 745-6211 POTASSIUM+1 more line at this price File of Aug 20, 2026 · source file | $75.75 | $101.00 | $4.76–$16.13 | 25% |
| VHS Detroit Receiving Hospital Detroit, MI · (313) 745-2941 POTASSIUM SERUM File of Apr 7, 2026 · source file | $76.50 | $102.00 | — | 25% |
| VHS Sinai Grace Hospital Detroit, MI · (313) 966-3300 POTASSIUM SERUM File of Apr 8, 2026 · source file | $83.25 | $111.00 | — | 25% |
| Harper University Hospital Detroit, MI · (313) 745-6211 POTASSIUM SERUM+1 more line at this price File of Sep 2, 2026 · source file | $87.00 | $116.00 | $4.76–$16.13 | 25% |
| RIM - Rehabilitation Institute of Michigan Detroit, MI POTASSIUM File of Apr 8, 2026 · source file | $88.50 | $118.00 | — | 25% |
| VHS Detroit Receiving Hospital Detroit, MI · (313) 745-2941 POTASSIUM File of Apr 7, 2026 · source file | $88.50 | $118.00 | — | 25% |
| VHS Childrens Hospital of Michigan Detroit, MI · (313) 745-5437 POTASSIUM File of Apr 6, 2026 · source file | $89.25 | $119.00 | — | 25% |
| VHS Sinai Grace Hospital Detroit, MI · (313) 966-3300 POTASSIUM File of Apr 8, 2026 · source file | $90.00 | $120.00 | — | 25% |
| Harper University Hospital Detroit, MI · (313) 745-6211 POC POTASSIUM+1 more line at this price File of Aug 20, 2026 · source file | $101.25 | $135.00 | $4.76–$16.13 | 25% |
| Surgeons Choice Medical Center Southfield, MI POTASSIUM (EPOC) source file | $120.00 | $120.00 | $4.19–$4.66 | — |
| St Joseph Mercy Oakland Pontiac, MI · (248) 858-3000 HC Potassium Serum/Plasma/Whole Blood File of Mar 31, 2026 · source file | $251.55 | — | $1.70–$15.24 | — |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More
Off list How much lower the cash price is than the list price.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
Outpatient: lowest $5.70, median $22.10, highest $76.50 — a 13.4× difference within the same market.
As an inpatient, the same code is billed by 23 facilities here, median $22.10. 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 9 of 21 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.