Ammonia test cost in Little Rock, AR
In Little Rock-North Little Rock-Conway, AR, 10 hospitals list a cash price for ammonia blood test: from $25.15 to $224.91, with a median of $50.99. The lowest listed price is at Baptist Health Medical Center - Little Rock — $25.84 less than the median here. Across Arkansas, the median is $54.34 at 49 hospitals.
Cash prices at 10 facilities across 4 cities for code 82140, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Nov 21, 2025 and Jul 2, 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 Little Rock-North Little Rock-Conway, AR.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Baptist Health Medical Center - Little Rock lowest Little Rock, AR · (501) 202-2000 82140 - ASSAY OF AMMONIA | $25.15 | $100.59 | $14.57–$31.82 | 75% | — source file |
| University of Arkansas for Medical Sciences Little Rock, AR · (501) 686-5000 AMMONIA LEVEL | $34.80 | $58.00 | $12.49–$887.00 | 40% | — source file |
| University of Arkansas for Medical Sciences Little Rock, AR · (501) 686-5000 ASSAY OF AMMONIA | $37.80 | $63.00 | $12.49–$887.00 | 40% | — source file |
| St. Vincent Infirmary Medical Center Sherwood, AR · (501) 552-7100 AMMONIA (BLOOD) | $44.24 | $174.00 | $10.99–$95.70 | 75% | Feb 28, 2026 source file |
| CHI St. Vincent Infirmary Little Rock, AR · (501) 552-3000 AMMONIA (BLOOD) | $44.65 | $174.00 | $10.99–$95.70 | 74% | Feb 28, 2026 source file |
| Arkansas Childrens Hospital Little Rock, AR · (501) 364-1100 ASSAY OF AMMONIA | $47.64 | $52.93 | $14.57–$52.93 | 10% | — source file |
| Baptist Health Medical Center - North Little Rock North Little Rock, AR · (501) 202-3000 82140 - ASSAY OF AMMONIA | $54.34 | $217.36 | $14.57–$31.82 | 75% | — source file |
| Baptist Health Medical Center - Conway Conway, AR · (501) 585-2000 82140 - ASSAY OF AMMONIA | $54.34 | $217.36 | $14.57–$31.82 | 75% | — source file |
| Conway Regional Medical Center Conway, AR · (501) 329-3831 AMMONIA | $56.90 | $258.65 | $14.57–$258.65 | 78% | Jul 2, 2026 source file |
| Conway Regional Medical Center Conway, AR · (501) 329-3831 AMMONIUM 24 HR URINE | $56.90 | $258.65 | $14.57–$258.65 | 78% | Jul 2, 2026 source file |
| Arkansas Heart Hospital Little Rock, AR · (501) 219-7000 Ammonia Level | $73.80 | $92.25 | $66.42–$159.00 | 20% | Nov 21, 2025 source file |
| Arkansas Childrens Hospital Little Rock, AR · (501) 364-1100 AMMONIA LEVEL | $119.23 | $132.48 | $14.57–$73.82 | 10% | — source file |
| Conway Regional Rehabilitation Hospital Conway, AR AMMONIA | $224.91 | $224.91 | — | — | — source file |
Outpatient: lowest $25.15, median $50.99, highest $224.91 — a 8.9× difference within the same market.
As an inpatient, the same code is billed by 4 facilities here, median $50.78. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 7 of 9 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.