Sodium test cost in Nashville, TN
In Nashville-Davidson--Murfreesboro--Franklin, TN, 21 hospitals list a cash price for sodium blood test: from $6.25 to $468.00, with a median of $54.13. The lowest listed price is at Saint Thomas Hospital for Specialty Surgery — $47.88 less than the median here. Across Tennessee, the median is $26.93 at 87 hospitals.
Cash prices at 21 facilities across 16 cities for code 84295, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 2, 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 |
|---|---|---|---|---|
| Saint Thomas Hospital for Specialty Surgery lowest Nashville, TN Sodium Level File of Apr 14, 2026 · source file | $6.25 | $63.00 | $4.33–$584.01 | 90% |
| Macon Community Hospital Lafayette, TN · (615) 666-2147 SODIUM File of Mar 21, 2026 · source file | $17.34 | $28.90 | $2.98–$26.01 | 40% |
| Vanderbilt Wilson County Hospital Lebanon, TN · (615) 444-2250 HC SODIUM BLOOD File of Oct 1, 2025 · source file | $22.62 | $78.00 | $4.56–$62.40 | 71% |
| Stones River Hospital Woodbury, TN · (615) 563-4001 SODIUM+1 more line at this price File of Jul 1, 2026 · source file | $26.93 | $89.75 | $3.38–$19.17 | 70% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 SODIUM+1 more line at this price File of Jan 1, 2026 · source file | $26.93 | $89.75 | $4.33–$19.17 | 70% |
| Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 SODIUM+1 more line at this price File of Jan 1, 2026 · source file | $26.93 | $89.75 | $4.33–$19.17 | 70% |
| Metro Nashville General Hospital Nashville, TN · (615) 341-4000 Sodium Level File of Sep 1, 2026 · source file | $36.60 | $61.00 | — | 40% |
| Sumner Regional Medical Center Gallatin, TN · (615) 328-8888 Sodium; serum, plasma or whole blood File of Jul 10, 2026 · source file | $40.72 | $174.75 | $14.50 | 77% |
| Vanderbilt University Medical Center Nashville, TN · (615) 322-3454 HC SODIUM BLOOD File of Oct 1, 2025 · source file | $42.12 | $78.00 | $4.56–$62.40 | 46% |
| Riverview Regional Medical Center Carthage, TN · (615) 735-9815 Sodium; serum, plasma or whole blood File of Jul 10, 2026 · source file | $47.45 | $145.55 | $19.94 | 67% |
| Williamson Medical Center Franklin, TN · (615) 435-5000 SODIUM File of Aug 1, 2026 · source file | $54.13 | $96.00 | $38.69–$91.20 | 44% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 SODIUM POC+1 more line at this price File of Jan 1, 2026 · source file | $64.82 | $216.05 | $4.33–$19.17 | 70% |
| Trousdale Medical Center Hartsville, TN · (615) 374-2221 Sodium; serum, plasma or whole blood File of Jul 10, 2026 · source file | $88.60 | $174.75 | $14.08 | 49% |
| Tristar Northcrest Medical Center Springfield, TN · (615) 384-2411 SODIUM BLD+1 more line at this price File of Sep 1, 2026 · source file | $214.16 | $214.16 | $4.81–$175.61 | — |
| Tristar Summit Medical Center Mt Juliet, TN · (615) 316-3000 SODIUM BLD File of Sep 1, 2026 · source file | $224.00 | $224.00 | $41.24–$197.12 | — |
| Tristar Skyline Medical Center Nashville, TN · (615) 769-2000 Sodium; serum, plasma or whole blood +1 more line at this price File of Sep 1, 2026 · source file | $348.39 | $348.39 | $4.81–$341.42 | — |
| Tristar Hendersonville Medical Center Portland, TN · (615) 338-1000 SODIUM BLD File of Sep 1, 2026 · source file | $354.18 | $354.18 | $65.20–$325.85 | — |
| Tristar Horizon Medical Center Dickson, TN · (615) 446-0446 SODIUM BLD File of Sep 1, 2026 · source file | $369.62 | $369.62 | $68.05–$340.05 | — |
| Tristar Stonecrest Medical Center Smyrna, TN · (615) 768-2000 SODIUM BLD+1 more line at this price File of Sep 1, 2026 · source file | $408.10 | $408.10 | $4.81–$375.45 | — |
| Tristar Ashland City Medical Center Ashland City, TN · (615) 792-3030 SODIUM BLD+1 more line at this price File of Sep 1, 2026 · source file | $444.90 | $444.90 | $4.81–$2,000.00 | — |
| Tristar Southern Hills Medical Center Nashville, TN · (615) 781-4000 Sodium; serum, plasma or whole blood +1 more line at this price File of Sep 1, 2026 · source file | $457.00 | $457.00 | $4.81–$402.16 | — |
| Tristar Centennial Medical Center Nashville, TN · (615) 342-1000 SODIUM BLD File of Sep 1, 2026 · source file | $468.00 | $468.00 | $313.56 | — |
Outpatient: lowest $6.25, median $54.13, highest $468.00 — a 74.9× difference within the same market.
As an inpatient, the same code is billed by 8 facilities here, median $26.93. 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 6 of 20 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 sodium test measures the level of sodium in the blood. It is used for confusion, weakness, dehydration and for people on diuretics or with heart, kidney or liver disease.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.