Ammonia test cost in Urban Honolulu, HI — inpatient
In Urban Honolulu, HI, 4 hospitals list a cash price for ammonia blood test as an inpatient: from $90.00 to $135.00, with a median of $90.00. The lowest listed price is at Pali Momi Medical Center and 2 other hospitals. Across Hawaii, the median is $135.00 at 11 hospitals.
Cash prices at 4 facilities across 2 cities for code 82140, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Feb 12, 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 Urban Honolulu, HI.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Pali Momi Medical Center lowest Aiea, HI · (808) 486-6000 AMMONIA LEVEL File of Feb 12, 2026 · source file | $90.00 | $150.00 | $112.50–$127.50 | 40% |
| Straub Clinic & Hospital lowest Honolulu, HI · (808) 522-4000 AMMONIA LEVEL File of Feb 12, 2026 · source file | $90.00 | $150.00 | $112.50–$127.50 | 40% |
| Kapiolani Medical Center for Women & Children lowest Honolulu, HI · (808) 983-6000 AMMONIA LEVEL File of Feb 12, 2026 · source file | $90.00 | $150.00 | $112.50–$135.00 | 40% |
| Kaiser Foundation Hospital - Moanalua Honolulu, HI · (808) 432-0000 ASSAY OF AMMONIA File of Apr 1, 2026 · source file | $135.00 | $180.00 | $15.00–$71.00 | 25% |
Inpatient: lowest $90.00, median $90.00, highest $135.00 — a 1.5× difference within the same market.
As an outpatient, the same code is billed by 8 facilities here, median $135.45 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 3 of 4 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 3 it is 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.