Potassium test cost in Davenport, IA
In Davenport-Moline-Rock Island, IA-IL, 7 hospitals list a cash price for potassium blood test: from $26.40 to $56.70, with a median of $30.00. The lowest listed price is at MercyOne Genesis Davenport West Medical Center and 1 other hospital — $3.60 less than the median here. Across Iowa, the median is $34.40 at 81 hospitals.
Cash prices at 7 facilities across 6 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 Jan 22, 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 Davenport-Moline-Rock Island, IA-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| MercyOne Genesis Davenport West Medical Center lowest Davenport, IA GHS MID POTASSIUM+5 more lines at this price File of Mar 31, 2026 · source file | $26.40 | $44.00 | $4.76 | 40% |
| MercyOne Genesis Aledo Medical Center lowest Aledo, IL · (309) 582-9100 GHS POTASSIUM (K) File of Mar 31, 2026 · source file | $26.40 | $44.00 | $5.47–$11.98 | 40% |
| MercyOne Genesis Davenport Medical Center Davenport, IA · (563) 421-1000 GHS POST POTASSIUM+5 more lines at this price File of Mar 31, 2026 · source file | $30.00 | $50.00 | — | 40% |
| MercyOne Genesis Silvis Medical Center Silvis, IL · (309) 281-4000 GHS POTASSIUM (K) File of Mar 31, 2026 · source file | $30.00 | $50.00 | $16.00–$46.00 | 40% |
| MercyOne Genesis Davenport West Medical Center Davenport, IA POTASSIUM, SERUM File of Mar 31, 2026 · source file | $30.00 | $50.00 | $4.76 | 40% |
| MercyOne Genesis Silvis Medical Center Silvis, IL · (309) 281-4000 POTASSIUM, SERUM File of Mar 31, 2026 · source file | $31.80 | $53.00 | $16.96–$48.76 | 40% |
| MercyOne Genesis Aledo Medical Center Aledo, IL · (309) 582-9100 POTASSIUM, SERUM File of Mar 31, 2026 · source file | $31.80 | $53.00 | $5.47–$11.98 | 40% |
| MercyOne Genesis Davenport Medical Center Davenport, IA · (563) 421-1000 POTASSIUM, SERUM File of Mar 31, 2026 · source file | $31.80 | $53.00 | — | 40% |
| Trinity Rock Island Rock Island, IL · (309) 779-5000 HC ASSAY OF SERUM POTASSIUM File of Jan 28, 2026 · source file | $33.57 | $41.96 | $4.47–$22.11 | 20% |
| Trinity - Bettendorf Bettendorf, IA · (563) 742-5000 HC ASSAY OF SERUM POTASSIUM File of Jan 28, 2026 · source file | $33.57 | $41.96 | $4.76–$22.11 | 20% |
| MercyOne Genesis Silvis Medical Center Silvis, IL · (309) 281-4000 POTASSIUM, CSF File of Mar 31, 2026 · source file | $54.00 | $90.00 | $28.80–$82.80 | 40% |
| MercyOne Genesis Aledo Medical Center Aledo, IL · (309) 582-9100 POTASSIUM, CSF File of Mar 31, 2026 · source file | $54.00 | $90.00 | $5.47–$11.98 | 40% |
| MercyOne Genesis Davenport West Medical Center Davenport, IA POTASSIUM, CSF File of Mar 31, 2026 · source file | $54.00 | $90.00 | $4.76 | 40% |
| MercyOne Genesis Davenport Medical Center Davenport, IA · (563) 421-1000 POTASSIUM, CSF File of Mar 31, 2026 · source file | $54.00 | $90.00 | — | 40% |
| Hammond Henry Dist Hospital Geneseo, IL · (309) 944-6431 Blood potassium level File of Jan 22, 2026 · source file | $56.70 | $63.00 | $3.00–$56.70 | 10% |
Outpatient: lowest $26.40, median $30.00, highest $56.70 — a 2.1× difference within the same market.
As an inpatient, the same code is billed by 4 facilities here, median $31.79. 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 6 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.