Potassium test cost in Jacksonville, FL
In Jacksonville, FL, 8 hospitals list a cash price for potassium blood test: from $7.96 to $849.42, with a median of $22.41. The lowest listed price is at Ascension St Vincent's Riverside and 3 other hospitals — $14.45 less than the median here. Across Florida, the median is $68.45 at 164 hospitals.
Cash prices at 8 facilities across 4 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 31, 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 Jacksonville, FL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Ascension St Vincent's Riverside lowest Jacksonville, FL · (904) 308-7300 ASSAY SERUM POTASSIUM 84132+11 more lines at this price source file | $7.96 | $21.50 | $4.19–$11.90 | 63% |
| Ascension St Vincent's Southside lowest Jacksonville, FL · (904) 296-3700 POTASSIUM SERUM+9 more lines at this price source file | $7.96 | $21.50 | $4.19–$21.50 | 63% |
| Ascension St Vincent's St Johns County lowest Saint Johns, FL · (904) 450-6020 POTASSIUM SERUM+9 more lines at this price source file | $7.96 | $21.50 | $4.19–$21.50 | 63% |
| St. Vincent's Medical Center-Clay County lowest Middleburg, FL · (904) 602-1000 POTASSIUM SERUM+9 more lines at this price source file | $7.96 | $21.50 | $4.19–$21.50 | 63% |
| University of Florida Health in Jacksonville Jacksonville, FL · (904) 244-4000 HB OP-POTASSIUM+4 more lines at this price File of Mar 31, 2026 · source file | $36.86 | $67.02 | $3.01–$5.57 | 45% |
| University of Florida Health in Jacksonville Jacksonville, FL · (904) 244-4000 UB UC POTASSIUM File of Mar 31, 2026 · source file | $37.26 | $67.74 | $3.01–$971.30 | 45% |
| ED Fraser Memorial Hospital Macclenny, FL · (904) 259-3151 POTASSIUM, SERUM source file | $95.00 | $95.00 | $4.42–$76.00 | — |
| HCA Florida Memorial Hospital Jacksonville, FL · (904) 702-6111 Potassium; serum, plasma or whole blood +2 more lines at this price File of Sep 1, 2026 · source file | $798.00 | $798.00 | $3.81–$718.20 | — |
| HCA Florida Orange Park Hospital Jacksonville, FL · (904) 276-8500 POTASSIUM BLD File of Sep 1, 2026 · source file | $849.42 | $849.42 | $71.35–$764.48 | — |
Outpatient: lowest $7.96, median $22.41, highest $849.42 — a 106.7× difference within the same market.
As an inpatient, the same code is billed by 7 facilities here, median $7.96. 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 4 of 8 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.