Sodium test cost in San Antonio, TX
In San Antonio-New Braunfels, TX, 16 hospitals list a cash price for sodium blood test: from $18.15 to $234.36, with a median of $201.67. The lowest listed price is at Santa Rosa Hospital - Westover Hills — $183.52 less than the median here. Across Texas, the median is $62.12 at 295 hospitals.
Cash prices at 16 facilities across 5 cities for code 84295, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Oct 14, 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 San Antonio-New Braunfels, TX.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Santa Rosa Hospital - Westover Hills lowest San Antonio, TX · (210) 703-8211 HC 84295 SODIUM BLOOD POC | $18.15 | $55.00 | $2.41–$52.25 | 67% | Jan 13, 2026 source file |
| Santa Rosa Hospital - Westover Hills lowest San Antonio, TX · (210) 703-8211 HC 84295 SODIUM | $18.15 | $55.00 | $2.41–$52.25 | 67% | Jan 13, 2026 source file |
| Santa Rosa Hospital - Westover Hills San Antonio, TX · (210) 703-8211 HC 84295 ASSAY OF SERUM SODIUM | $23.76 | $72.00 | $2.41–$68.40 | 67% | Jan 13, 2026 source file |
| University Health System San Antonio, TX · (210) 358-2000 HC ASSAY OF SERUM SODIUM - SODIUM | $33.50 | $134.00 | $4.04–$335.00 | 75% | Oct 14, 2025 source file |
| Medina Regional Hospital Hondo, TX · (830) 426-7700 SODIUM SERUM/PLASMA/WHOLE BLD | $55.53 | $61.69 | $7.70–$61.69 | 10% | Jul 29, 2026 source file |
| Guadalupe Regional Medical Center Seguin, TX · (830) 379-2411 SODIUM;SERUM,PLASMA/WHL BLD | $56.50 | $113.00 | $4.81–$113.00 | 50% | — source file |
| Warm Springs Rehabilitation Hospital of San Antonio San Antonio, TX Serum Sodium | $120.95 | $120.95 | $3.37–$108.86 | — | Aug 6, 2026 source file |
| Methodist Hospital Helotes, TX · (210) 575-4000 SODIUM BLD | $201.67 | $201.67 | $10.08–$201.67 | — | Sep 1, 2026 source file |
| Methodist Specialty and Transplant San Antonio, TX · (210) 575-4000 SODIUM BLD | $201.67 | $201.67 | $135.12 | — | Sep 1, 2026 source file |
| Methodist Texsan Hospital San Antonio, TX · (210) 638-2101 SODIUM BLD | $201.67 | $201.67 | $10.08–$171.42 | — | Sep 1, 2026 source file |
| Methodist Hospital Atascosa Jourdanton, TX · (830) 769-3515 SODIUM BLD | $201.67 | $201.67 | $10.08–$171.42 | — | Sep 1, 2026 source file |
| Methodist Hospital Stone Oak San Antonio, TX · (210) 638-2101 SODIUM BLD | $201.67 | $201.67 | $10.08–$171.42 | — | Sep 1, 2026 source file |
| Methodist Texsan Hospital Rehab San Antonio, TX SODIUM BLD | $201.67 | $201.67 | $10.08–$171.42 | — | Sep 1, 2026 source file |
| Metropolitan Methodist San Antonio, TX · (210) 575-4000 SODIUM BLD | $201.67 | $201.67 | $10.08–$171.42 | — | Sep 1, 2026 source file |
| Stone Oak Rehab San Antonio, TX SODIUM BLD | $201.67 | $201.67 | $10.08–$171.42 | — | Sep 1, 2026 source file |
| Northeast Methodist San Antonio, TX · (210) 638-2101 SODIUM BLD | $201.67 | $201.67 | $10.08–$171.42 | — | Sep 1, 2026 source file |
| Methodist Hospital Westover Hills San Antonio, TX · (210) 638-2101 SODIUM BLD | $234.36 | $234.36 | $57.65–$199.21 | — | Sep 1, 2026 source file |
| Methodist Hospital Landmark San Antonio, TX · (210) 638-2101 SODIUM BLD | $234.36 | $234.36 | $57.65–$199.21 | — | Sep 1, 2026 source file |
| Methodist Hospital Westover Hills San Antonio, TX · (210) 638-2101 Sodium; serum, plasma or whole blood | $234.36 | $234.36 | $4.04–$4.81 | — | Sep 1, 2026 source file |
Outpatient: lowest $18.15, median $201.67, highest $234.36 — a 12.9× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $55.53. 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 16 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.