Ammonia test cost in Walla Walla, WA — inpatient
In Walla Walla, WA, 1 hospital lists a cash price for ammonia blood test as an inpatient: from $14.70 to $14.70, with a median of $14.70. Across Washington, the median is $114.40 at 59 hospitals.
Cash prices at 1 facility for code 82140, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 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 Walla Walla, WA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Providence St Mary Medical Center lowest Walla Walla, WA · (509) 522-5900 HC ASSAY OF AMMONIA LAB | $14.70 | $21.00 | — | 30% | Apr 1, 2026 source file |
| Providence St Mary Medical Center Walla Walla, WA · (509) 522-5900 HC AMMONIA (RL) | $20.30 | $29.00 | — | 30% | Apr 1, 2026 source file |
Inpatient: lowest $14.70, median $14.70, highest $14.70.
As an outpatient, the same code is billed by 1 facility here, median $14.70 — that is the price to compare if you are not being admitted.
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.