Potassium test cost in Champaign, IL — inpatient
In Champaign-Urbana, IL, 2 hospitals list a cash price for potassium blood test as an inpatient: from $4.00 to $100.00, with a median of $52.00. The lowest listed price is at The Carle Foundation Hospital — $48.00 less than the median here. Across Illinois, the median is $46.20 at 113 hospitals.
Cash prices at 2 facilities across 2 cities for code 84132, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Apr 15, 2026 and Apr 15, 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 Champaign-Urbana, IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| The Carle Foundation Hospital lowest Urbana, IL · (217) 383-3311 Potassium, Plasma Ref File of Apr 15, 2026 · source file | $4.00 | $4.00 | $0.40–$4.21 | — |
| Gibson Community Hospital Gibson City, IL · (217) 784-4251 POTASSIUM SERUM source file | $100.00 | $100.00 | $68.50–$95.00 | — |
| The Carle Foundation Hospital Urbana, IL · (217) 383-3311 Potassium, Serum File of Apr 15, 2026 · source file | $142.00 | $142.00 | $4.09–$120.70 | — |
| The Carle Foundation Hospital Urbana, IL · (217) 383-3311 Assay of Serum Potassium File of Apr 15, 2026 · source file | $184.00 | $184.00 | $4.09–$156.40 | — |
| The Carle Foundation Hospital Urbana, IL · (217) 383-3311 Potassium File of Apr 15, 2026 · source file | $189.00 | $189.00 | $4.09–$160.65 | — |
Inpatient: lowest $4.00, median $52.00, highest $100.00 — a 25.0× difference within the same market.
As an outpatient, the same code is billed by 2 facilities here, median $52.00 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 1 of 2 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.