Ammonia test cost in Austin, TX — inpatient
In Austin-Round Rock-San Marcos, TX, 20 hospitals list a cash price for ammonia blood test as an inpatient: from $53.60 to $277.43, with a median of $145.94. The lowest listed price is at Texas Children's Hospital - Austin — $92.34 less than the median here. Across Texas, the median is $145.94 at 307 hospitals.
Cash prices at 20 facilities across 10 cities for code 82140, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 5, 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 | File date |
|---|---|---|---|---|---|
| Texas Children's Hospital - Austin lowest Austin, TX · (832) 824-1100 TC AMMONIA REFERENCE TEST STONE | $53.60 | $80.00 | $32.00–$76.00 | 33% | Mar 5, 2026 source file |
| Ascension Seton Edgar B Davis Luling, TX · (830) 875-7000 AMMONIA | $66.96 | $186.00 | $12.24–$108.35 | 64% | — source file |
| Texas Children's Hospital - Austin Austin, TX · (832) 824-1100 TC AMMONIA | $99.16 | $148.00 | $59.20–$140.60 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital - Austin Austin, TX · (832) 824-1100 TC STONE RISK - AMMONIA URINE | $105.86 | $158.00 | $63.20–$150.10 | 33% | Mar 5, 2026 source file |
| Ascension Seton Hays Kyle, TX · (512) 324-5000 AMMONIA | $107.46 | $298.50 | $12.24–$134.32 | 64% | — source file |
| Ascension Seton Smithville Smithville, TX · (512) 237-3214 AMMONIA | $111.69 | $310.25 | $12.24–$139.61 | 64% | — source file |
| Ascension Seton Northwest Austin, TX · (512) 324-6000 AMMONIA | $111.69 | $310.25 | $12.24–$139.61 | 64% | — source file |
| Dell Seton Medical Center at the University of Tx Austin, TX · (512) 324-7000 AMMONIA | $111.69 | $310.25 | $12.24–$139.61 | 64% | — source file |
| Ascension Seton Southwest Austin, TX · (512) 324-9000 AMMONIA | $111.69 | $310.25 | $12.24–$139.61 | 64% | — source file |
| Ascension Seton Medical Center Austin Austin, TX · (512) 324-1000 AMMONIA | $111.69 | $310.25 | $12.24–$139.61 | 64% | — source file |
| Baylor Scott & White Medical Center - Buda Buda, TX · (737) 999-6200 HC AMMONIA | $145.94 | $243.23 | $133.78–$170.26 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Round Rock Round Rock, TX · (512) 509-0401 HC AMMONIA | $145.94 | $243.23 | $133.78–$218.91 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Austin Austin, TX · (512) 654-2100 HC AMMONIA | $145.94 | $243.23 | $133.78–$170.26 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Emergency Medical Center - Cedar Park Cedar Park, TX · (512) 509-0401 HC AMMONIA | $145.94 | $243.23 | $133.78–$158.10 | 40% | Jun 3, 2026 source file |
| Baylor Scott & White Medical Center - Lakeway Lakeway, TX · (512) 509-0401 HC AMMONIA | $145.94 | $243.23 | $133.78–$218.91 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Taylor Taylor, TX · (512) 352-7611 HC AMMONIA | $145.94 | $243.23 | $133.78–$194.58 | 40% | Jun 12, 2026 source file |
| Baylor Scott & White Medical Center - Pflugerville Pflugerville, TX · (512) 654-6100 HC AMMONIA | $145.94 | $243.23 | $133.78–$218.91 | 40% | Jun 13, 2026 source file |
| Warm Springs Rehabilitation Hospital of Kyle Kyle, TX Ammonia | $213.20 | $213.20 | $149.24–$191.88 | — | Aug 6, 2026 source file |
| PAM Rehabilitation Hospital of Round Rock Round Rock, TX Ammonia | $213.20 | $213.20 | $149.24–$191.88 | — | Aug 6, 2026 source file |
| Ascension Seton Austin, TX AMMONIA | $217.18 | $310.25 | $12.24–$139.61 | 30% | — source file |
| Pam Specialty Hospital of Luling Luling, TX Ammonia | $268.45 | $268.45 | $187.92–$241.61 | — | Aug 6, 2026 source file |
| Ascension Cedar Park Cedar Park, TX · (512) 528-7000 AMMONIA | $277.43 | $770.63 | $12.24–$346.78 | 64% | — source file |
Inpatient: lowest $53.60, median $145.94, highest $277.43 — a 5.2× difference within the same market.
As an outpatient, the same code is billed by 30 facilities here, median $145.94 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 16 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
An ammonia test measures ammonia in the blood. It is used for confusion or drowsiness in people with liver disease and for some rare inherited disorders in newborns.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.