Ammonia test cost in Oklahoma City, OK — inpatient
In Oklahoma City, OK, 5 hospitals list a cash price for ammonia blood test as an inpatient: from $35.22 to $162.00, with a median of $45.50. The lowest listed price is at Mercy Rehabilitation Hospital Oklahoma City South — $10.28 less than the median here. Across Oklahoma, the median is $60.00 at 59 hospitals.
Cash prices at 5 facilities for code 82140, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 16, 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 Oklahoma City, OK.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Mercy Rehabilitation Hospital Oklahoma City South lowest Oklahoma City, OK AMMONIA source file | $35.22 | $35.22 | $26.42–$35.22 | — |
| Oklahoma Heart Hospital South Oklahoma City, OK · (405) 628-6000 HC Assay of Ammonia - Ammonia File of Mar 27, 2026 · source file | $45.50 | $130.00 | $12.96–$117.00 | 65% |
| Oklahoma Heart Hospital Oklahoma City, OK · (405) 608-3200 HC Assay of Ammonia - Ammonia File of Mar 27, 2026 · source file | $45.50 | $130.00 | $12.96–$117.00 | 65% |
| Mercy Rehabilitation Hospital Oklahoma City Oklahoma City, OK AMMONIA BLOOD File of Mar 16, 2026 · source file | $45.90 | $45.90 | $34.43–$45.90 | — |
| Mercy Rehabilitation Hospital Oklahoma City South Oklahoma City, OK AMMONIA BLOOD source file | $45.90 | $45.90 | $34.43–$45.90 | — |
| Mercy Rehabilitation Hospital Oklahoma City Oklahoma City, OK AMMONIA File of Mar 16, 2026 · source file | $149.44 | $149.44 | $112.08–$149.44 | — |
| PAM Health Specialty Hospital of Oklahoma City Oklahoma City, OK Ammonia File of Aug 6, 2026 · source file | $162.00 | $162.00 | $113.40–$137.70 | — |
Inpatient: lowest $35.22, median $45.50, highest $162.00 — a 4.6× difference within the same market.
As an outpatient, the same code is billed by 6 facilities here, median $45.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 2 of 5 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.