Potassium test cost in Jacksonville, FL — inpatient
In Jacksonville, FL, 7 hospitals list a cash price for potassium blood test as an inpatient: from $7.96 to $95.00, with a median of $7.96. The lowest listed price is at Ascension St Vincent's St Johns County and 3 other hospitals. Across Florida, the median is $68.45 at 164 hospitals.
Cash prices at 7 facilities across 4 cities for code 84132, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Nov 12, 2025 and Aug 6, 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 St Johns County lowest Saint Johns, FL · (904) 450-6020 POTASSIUM SERUM+9 more lines at this price File of Jan 1, 2026 · 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 POC (POINT OF CARE)+9 more lines at this price File of Jan 1, 2026 · source file | $7.96 | $21.50 | $4.19–$21.50 | 63% |
| Ascension St Vincent's Riverside lowest Jacksonville, FL · (904) 308-7300 POTASSIUM SERUM+5 more lines at this price File of Jan 1, 2026 · source file | $7.96 | $21.50 | $4.19–$11.90 | 63% |
| Ascension St Vincent's Southside lowest Jacksonville, FL · (904) 296-3700 ASSAY SERUM POTASSIUM 84132+9 more lines at this price File of Jan 1, 2026 · source file | $7.96 | $21.50 | $4.19–$21.50 | 63% |
| University of Florida Health in Jacksonville Jacksonville, FL · (904) 244-4000 HB POTASSIUM BLOOD+4 more lines at this price File of Mar 31, 2026 · source file | $36.86 | $67.02 | $28.01–$63.67 | 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 | $28.45–$64.35 | 45% |
| PAM Health Specialty Hospital of Jacksonville Jacksonville, FL Serum Potassium File of Aug 6, 2026 · source file | $47.60 | $47.60 | $19.04–$40.46 | — |
| ED Fraser Memorial Hospital Macclenny, FL · (904) 259-3151 POTASSIUM, SERUM File of Nov 12, 2025 · source file | $95.00 | $95.00 | $4.42–$76.00 | — |
Inpatient: lowest $7.96, median $7.96, highest $95.00 — a 11.9× difference within the same market.
As an outpatient, the same code is billed by 8 facilities here, median $22.41 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 5 of 7 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.