Potassium test cost in Austin, TX — inpatient
In Austin-Round Rock-San Marcos, TX, 18 hospitals list a cash price for potassium blood test as an inpatient: from $24.12 to $143.25, with a median of $59.87. The lowest listed price is at Ascension Seton Edgar B Davis — $35.75 less than the median here. Across Texas, the median is $59.87 at 280 hospitals.
Cash prices at 18 facilities across 10 cities for code 84132, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Jan 1, 2026 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 Austin-Round Rock-San Marcos, TX.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Ascension Seton Edgar B Davis lowest Luling, TX · (830) 875-7000 POTASSIUM SERUM+1 more line at this price File of Jan 1, 2026 · source file | $24.12 | $67.00 | $4.00–$34.17 | 64% |
| Ascension Seton Smithville Smithville, TX · (512) 237-3214 RT POTASSIUM+1 more line at this price File of Jan 1, 2026 · source file | $33.66 | $93.50 | $4.00–$42.08 | 64% |
| Ascension Seton Hays Kyle, TX · (512) 324-5000 POTASSIUM FLUID+1 more line at this price File of Jan 1, 2026 · source file | $39.87 | $110.75 | $4.00–$49.84 | 64% |
| Ascension Seton Smithville Smithville, TX · (512) 237-3214 POTASSIUM SERUM+1 more line at this price File of Jan 1, 2026 · source file | $41.49 | $115.25 | $4.00–$51.86 | 64% |
| Ascension Seton Medical Center Austin Austin, TX · (512) 324-1000 POTASSIUM FLUID+2 more lines at this price File of Jan 1, 2026 · source file | $41.49 | $115.25 | $4.00–$51.86 | 64% |
| Ascension Seton Northwest Austin, TX · (512) 324-6000 POTASSIUM+2 more lines at this price File of Jan 1, 2026 · source file | $41.49 | $115.25 | $4.00–$51.86 | 64% |
| Ascension Seton Southwest Austin, TX · (512) 324-9000 POTASSIUM FLUID+2 more lines at this price File of Jan 1, 2026 · source file | $41.49 | $115.25 | $4.00–$51.86 | 64% |
| Dell Seton Medical Center at the University of Tx Austin, TX · (512) 324-7000 POTASSIUM FLUID+2 more lines at this price File of Jan 1, 2026 · source file | $41.49 | $115.25 | $4.00–$51.86 | 64% |
| Ascension Seton Hays Kyle, TX · (512) 324-5000 RT POTASSIUM+1 more line at this price File of Jan 1, 2026 · source file | $41.49 | $115.25 | $4.00–$51.86 | 64% |
| Ascension Seton Edgar B Davis Luling, TX · (830) 875-7000 RT POTASSIUM K File of Jan 1, 2026 · source file | $43.56 | $121.00 | $4.00–$54.45 | 64% |
| Texas Children's Hospital - Austin Austin, TX · (832) 824-1100 TC POTASSIUM (K) WHOLE BLOOD File of Mar 5, 2026 · source file | $45.56 | $68.00 | $27.20–$64.60 | 33% |
| Texas Children's Hospital - Austin Austin, TX · (832) 824-1100 TC POTASSIUM (K), POCT+1 more line at this price File of Mar 5, 2026 · source file | $57.62 | $86.00 | $34.40–$81.70 | 33% |
| Baylor Scott & White Medical Center - Round Rock Round Rock, TX · (512) 509-0401 HC POTASSIUM, POST DIALYSIS+2 more lines at this price File of Jun 13, 2026 · source file | $59.87 | $99.79 | $54.88–$89.81 | 40% |
| Baylor Scott & White Medical Center - Taylor Taylor, TX · (512) 352-7611 HC POTASSIUM+2 more lines at this price File of Jun 12, 2026 · source file | $59.87 | $99.79 | $54.88–$79.83 | 40% |
| Baylor Scott & White Medical Center - Austin Austin, TX · (512) 654-2100 HC POTASSIUM+2 more lines at this price File of Jun 13, 2026 · source file | $59.87 | $99.79 | $54.88–$69.85 | 40% |
| Baylor Scott & White Medical Center - Buda Buda, TX · (737) 999-6200 HC POTASSIUM, POST DIALYSIS+2 more lines at this price File of Jun 13, 2026 · source file | $59.87 | $99.79 | $54.88–$69.85 | 40% |
| Baylor Scott & White Medical Center - Pflugerville Pflugerville, TX · (512) 654-6100 HC POTASSIUM+2 more lines at this price File of Jun 13, 2026 · source file | $59.87 | $99.79 | $54.88–$89.81 | 40% |
| Baylor Scott & White Emergency Medical Center - Cedar Park Cedar Park, TX · (512) 509-0401 HC POTASSIUM+2 more lines at this price File of Jun 3, 2026 · source file | $59.87 | $99.79 | $54.88–$64.86 | 40% |
| Baylor Scott & White Medical Center - Lakeway Lakeway, TX · (512) 509-0401 HC POTASSIUM+2 more lines at this price File of Jun 13, 2026 · source file | $59.87 | $99.79 | $54.88–$89.81 | 40% |
| Ascension Seton Austin, TX POTASSIUM+1 more line at this price File of Jan 1, 2026 · source file | $65.45 | $93.50 | $4.00–$42.08 | 30% |
| Ascension Seton Hays Kyle, TX · (512) 324-5000 RT POTASSIUM K File of Jan 1, 2026 · source file | $68.13 | $189.25 | $4.00–$85.16 | 64% |
| Ascension Seton Smithville Smithville, TX · (512) 237-3214 RT POTASSIUM K File of Jan 1, 2026 · source file | $70.92 | $197.00 | $4.00–$88.65 | 64% |
| Ascension Seton Austin, TX POTASSIUM SERUM+1 more line at this price File of Jan 1, 2026 · source file | $80.68 | $115.25 | $4.00–$51.86 | 30% |
| Ascension Cedar Park Cedar Park, TX · (512) 528-7000 POTASSIUM SER PL WB File of Jan 1, 2026 · source file | $87.44 | $242.89 | $4.00–$109.30 | 64% |
| Ascension Seton Austin, TX RT POTASSIUM K File of Jan 1, 2026 · source file | $137.90 | $197.00 | $4.00–$88.65 | 30% |
| Pam Specialty Hospital of Luling Luling, TX Serum Potassium File of Aug 6, 2026 · source file | $143.25 | $143.25 | $100.28–$128.93 | — |
Inpatient: lowest $24.12, median $59.87, highest $143.25 — a 5.9× difference within the same market.
As an outpatient, the same code is billed by 27 facilities here, median $59.87 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 16 of 18 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.