Potassium test cost in Nashville, TN
In Nashville-Davidson--Murfreesboro--Franklin, TN, 22 hospitals list a cash price for potassium blood test: from $6.19 to $552.00, with a median of $60.84. The lowest listed price is at Saint Thomas Hospital for Specialty Surgery — $54.65 less than the median here. Across Tennessee, the median is $26.13 at 87 hospitals.
Cash prices at 22 facilities across 17 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 Oct 1, 2025 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 Nashville-Davidson--Murfreesboro--Franklin, TN.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Saint Thomas Hospital for Specialty Surgery lowest Nashville, TN Potassium Level | $6.19 | $11.00 | $4.28–$584.01 | 44% | Apr 14, 2026 source file |
| Macon Community Hospital Lafayette, TN · (615) 666-2147 POTASSIUM LVL | $17.16 | $28.60 | $2.84–$25.74 | 40% | — source file |
| Vanderbilt Wilson County Hospital Lebanon, TN · (615) 444-2250 HC POTASSIUM SERUM/ PLASMA/ BLOOD | $20.88 | $72.00 | $4.51–$57.60 | 71% | Oct 1, 2025 source file |
| Metro Nashville General Hospital Nashville, TN · (615) 341-4000 Potassium Level | $37.80 | $63.00 | — | 40% | Sep 1, 2026 source file |
| Vanderbilt University Medical Center Nashville, TN · (615) 322-3454 HC POTASSIUM SERUM/ PLASMA/ BLOOD | $38.88 | $72.00 | $4.51–$57.60 | 46% | Oct 1, 2025 source file |
| Sumner Regional Medical Center Gallatin, TN · (615) 328-8888 Potassium; serum, plasma or whole blood | $39.95 | $171.44 | $15.02 | 77% | — source file |
| Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 POTASSIUM | $42.81 | $142.70 | $4.28–$18.06 | 70% | — source file |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 POTASSIUM | $42.81 | $142.70 | $4.28–$18.06 | 70% | — source file |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 POTASSIUM | $42.81 | $142.70 | $4.28–$18.06 | 70% | — source file |
| Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 POTASSIUM | $42.81 | $142.70 | $4.28–$18.06 | 70% | — source file |
| Stones River Hospital Woodbury, TN · (615) 563-4001 POTASSIUM | $42.81 | $142.70 | $3.23–$18.06 | 70% | — source file |
| Stones River Hospital Woodbury, TN · (615) 563-4001 POTASSIUM | $42.81 | $142.70 | $3.23–$18.06 | 70% | — source file |
| Riverview Regional Medical Center Carthage, TN · (615) 735-9815 Potassium; serum, plasma or whole blood | $46.55 | $142.79 | $19.03 | 67% | — source file |
| Williamson Medical Center Franklin, TN · (615) 435-5000 POTASSIUM SERUM | $49.22 | $87.30 | $35.18–$82.93 | 44% | — source file |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 POTASSIUM POC | $64.82 | $216.05 | $4.28–$18.06 | 70% | — source file |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 POTASSIUM POC | $64.82 | $216.05 | $4.28–$18.06 | 70% | — source file |
| Trousdale Medical Center Hartsville, TN · (615) 374-2221 Potassium; serum, plasma or whole blood | $72.45 | $142.90 | $13.46 | 49% | — source file |
| Tristar Northcrest Medical Center Springfield, TN · (615) 384-2411 POTASSIUM BLD | $208.22 | $208.22 | $39.56–$170.74 | — | Sep 1, 2026 source file |
| Tristar Northcrest Medical Center Springfield, TN · (615) 384-2411 Potassium; serum, plasma or whole blood | $208.22 | $208.22 | $4.76 | — | Sep 1, 2026 source file |
| Tristar Summit Medical Center Mt Juliet, TN · (615) 316-3000 POTASSIUM BLD | $234.00 | $234.00 | $43.08–$205.92 | — | Sep 1, 2026 source file |
| Pinewood Springs Columbia, TN · (931) 777-6000 Potassium; serum, plasma or whole blood | $285.64 | $285.64 | $3.78–$6.85 | — | Sep 1, 2026 source file |
| Pinewood Springs Columbia, TN · (931) 777-6000 POTASSIUM BLD | $285.64 | $285.64 | $142.82–$234.22 | — | Sep 1, 2026 source file |
| Tristar Horizon Medical Center Dickson, TN · (615) 446-0446 POTASSIUM BLD | $338.02 | $338.02 | $62.23–$310.98 | — | Sep 1, 2026 source file |
| Tristar Skyline Medical Center Nashville, TN · (615) 769-2000 Potassium; serum, plasma or whole blood | $348.39 | $348.39 | $4.76 | — | Sep 1, 2026 source file |
| Tristar Skyline Medical Center Nashville, TN · (615) 769-2000 POTASSIUM BLD | $348.39 | $348.39 | $64.14–$341.42 | — | Sep 1, 2026 source file |
| Tristar Hendersonville Medical Center Portland, TN · (615) 338-1000 POTASSIUM BLD | $354.18 | $354.18 | $65.20–$325.85 | — | Sep 1, 2026 source file |
| Tristar Stonecrest Medical Center Smyrna, TN · (615) 768-2000 Potassium; serum, plasma or whole blood | $417.52 | $417.52 | $4.76 | — | Sep 1, 2026 source file |
| Tristar Stonecrest Medical Center Smyrna, TN · (615) 768-2000 POTASSIUM BLD | $417.52 | $417.52 | $76.87–$384.12 | — | Sep 1, 2026 source file |
| Tristar Southern Hills Medical Center Nashville, TN · (615) 781-4000 POTASSIUM BLD | $464.00 | $464.00 | $85.42–$408.32 | — | Sep 1, 2026 source file |
| Tristar Ashland City Medical Center Ashland City, TN · (615) 792-3030 Potassium; serum, plasma or whole blood | $530.01 | $530.01 | $4.76 | — | Sep 1, 2026 source file |
| Tristar Ashland City Medical Center Ashland City, TN · (615) 792-3030 POTASSIUM BLD | $530.01 | $530.01 | $97.57–$2,000.00 | — | Sep 1, 2026 source file |
| Tristar Centennial Medical Center Nashville, TN · (615) 342-1000 POTASSIUM BLD | $552.00 | $552.00 | $101.62–$552.00 | — | Sep 1, 2026 source file |
Outpatient: lowest $6.19, median $60.84, highest $552.00 — a 89.2× difference within the same market.
As an inpatient, the same code is billed by 8 facilities here, median $40.85. 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 5 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.