Potassium test cost in Little Rock, AR
In Little Rock-North Little Rock-Conway, AR, 11 hospitals list a cash price for potassium blood test: from $4.85 to $72.77, with a median of $21.36. The lowest listed price is at Arkansas Childrens Hospital — $16.51 less than the median here. Across Arkansas, the median is $19.43 at 50 hospitals.
Cash prices at 11 facilities across 5 cities for code 84132, 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 |
|---|---|---|---|---|---|
| Arkansas Childrens Hospital lowest Little Rock, AR · (501) 364-1100 ASSAY OF SERUM POTASSIUM | $4.85 | $5.39 | $4.76–$5.39 | 10% | — source file |
| Conway Regional Medical Center Conway, AR · (501) 329-3831 ASSAY OF SERUM POTASSIUM | $5.50 | $25.00 | $4.76–$25.00 | 78% | Jul 2, 2026 source file |
| Baptist Health Medical Center - Little Rock Little Rock, AR · (501) 202-2000 84132 - POTASSIUM SERUM PLASMA-WHOLE BLOOD | $10.56 | $42.24 | $4.76–$10.39 | 75% | — source file |
| Baptist Health Medical Center - North Little Rock North Little Rock, AR · (501) 202-3000 84132 - POTASSIUM SERUM PLASMA-WHOLE BLOOD | $10.92 | $43.68 | $4.76–$10.39 | 75% | — source file |
| Baptist Health Medical Center - Conway Conway, AR · (501) 585-2000 84132 - POTASSIUM SERUM PLASMA-WHOLE BLOOD | $10.92 | $43.68 | $4.76–$10.39 | 75% | — source file |
| Conway Regional Medical Center Conway, AR · (501) 329-3831 POTASSIUM | $18.97 | $86.22 | $4.76–$86.22 | 78% | Jul 2, 2026 source file |
| Conway Regional Medical Center Conway, AR · (501) 329-3831 POTASSIUM SERUM/FLUID | $18.97 | $86.22 | $4.76–$86.22 | 78% | Jul 2, 2026 source file |
| Conway Regional Medical Center Conway, AR · (501) 329-3831 ASD POTASSIUM | $18.97 | $86.22 | $4.76–$86.22 | 78% | Jul 2, 2026 source file |
| St. Vincent Infirmary Medical Center Sherwood, AR · (501) 552-7100 ISTAT POTASSIUM | $21.36 | $84.00 | $3.58–$46.20 | 75% | Feb 28, 2026 source file |
| St. Vincent Infirmary Medical Center Sherwood, AR · (501) 552-7100 POTASSIUM | $21.36 | $84.00 | $3.58–$46.20 | 75% | Feb 28, 2026 source file |
| CHI St. Vincent Infirmary Little Rock, AR · (501) 552-3000 POTASSIUM | $21.56 | $84.00 | $3.58–$46.20 | 74% | Feb 28, 2026 source file |
| CHI St. Vincent Infirmary Little Rock, AR · (501) 552-3000 ISTAT POTASSIUM | $21.56 | $84.00 | $3.58–$46.20 | 74% | Feb 28, 2026 source file |
| University of Arkansas for Medical Sciences Little Rock, AR · (501) 686-5000 BLOOD POTASSIUM LEVEL | $23.40 | $39.00 | $4.62–$887.00 | 40% | — source file |
| CHI St. Vincent Infirmary Little Rock, AR · (501) 552-3000 LAB-POTASSIUM - OH (SURGERY) | $23.61 | $92.00 | $3.58–$50.60 | 74% | Feb 28, 2026 source file |
| St. Vincent Infirmary Medical Center Sherwood, AR · (501) 552-7100 LAB-POTASSIUM - OH (SURGERY) | $24.41 | $96.00 | $3.58–$52.80 | 75% | Feb 28, 2026 source file |
| University of Arkansas for Medical Sciences Little Rock, AR · (501) 686-5000 ASSAY OF SERUM POTASSIUM | $25.80 | $43.00 | $4.62–$887.00 | 40% | — source file |
| Arkansas Heart Hospital-Encore Bryant, AR · (501) 213-4500 84132 - Potassium | $55.40 | $69.25 | $20.98–$159.00 | 20% | Nov 21, 2025 source file |
| Arkansas Heart Hospital-Encore Bryant, AR · (501) 213-4500 Potassium Level | $55.40 | $69.25 | $20.98–$159.00 | 20% | Nov 21, 2025 source file |
| Arkansas Heart Hospital Little Rock, AR · (501) 219-7000 Potassium Level | $55.40 | $69.25 | $20.98–$159.00 | 20% | Nov 21, 2025 source file |
| Arkansas Heart Hospital Little Rock, AR · (501) 219-7000 84132 - Potassium | $55.40 | $69.25 | $20.98–$159.00 | 20% | Nov 21, 2025 source file |
| Conway Regional Rehabilitation Hospital Conway, AR POTASSIUM SERUM/FLUID | $72.77 | $72.77 | — | — | — source file |
| Arkansas Childrens Hospital Little Rock, AR · (501) 364-1100 BLOOD POTASSIUM LEVEL | $76.30 | $84.78 | $4.76–$38.77 | 10% | — source file |
Outpatient: lowest $4.85, median $21.36, highest $72.77 — a 15.0× difference within the same market.
As an inpatient, the same code is billed by 4 facilities here, median $21.46. 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 10 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
A potassium test measures the level of potassium in the blood. Doctors check it for people on diuretics or blood pressure drugs, with kidney disease, an irregular heartbeat, or vomiting and diarrhea.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
2 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84132 ($37.50). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| St. Vincent Infirmary Medical Center Sherwood, ARPOTASSIUM BF | $1.28 | file |
| CHI St. Vincent Infirmary Little Rock, ARPOTASSIUM BF | $1.29 | file |