CK (creatine kinase) test cost in Portland, ME — inpatient
In Portland-South Portland, ME, 5 hospitals list a cash price for creatine kinase (CK) blood test, total as an inpatient: from $16.12 to $108.30, with a median of $70.65. The lowest listed price is at Northern Light Mercy Hospital — $54.53 less than the median here. Across Maine, the median is $48.00 at 28 hospitals.
Cash prices at 5 facilities across 4 cities for code 82550, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Sep 9, 2025 and Jul 4, 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 Portland-South Portland, ME.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Northern Light Mercy Hospital lowest Portland, ME · (207) 879-3000 CPK TOTAL+2 more lines at this price File of Apr 15, 2026 · source file | $16.12 | $62.00 | $40.30–$46.25 | 74% |
| York Hospital York, ME · (207) 351-2478 W CK REFLEX (WELLS) File of Jul 4, 2026 · source file | $48.00 | $80.00 | — | 40% |
| Southern Maine Medical Center Biddeford, ME · (207) 662-0111 HC CREATINE KINASE TOTAL File of Sep 9, 2025 · source file | $70.65 | $70.65 | $51.97–$66.41 | — |
| York Hospital York, ME · (207) 351-2478 CK+2 more lines at this price File of Jul 4, 2026 · source file | $70.80 | $118.00 | — | 40% |
| MaineHealth Maine Medical Center Portland, ME · (207) 662-0111 B* HC CREATINE KINASE TOTAL File of Sep 9, 2025 · source file | $87.45 | $87.45 | $64.33–$82.20 | — |
| MaineHealth Mid Coast Hospital Brunswick, ME · (207) 729-0181 HC CREATINE KINASE TOTAL File of Sep 9, 2025 · source file | $108.30 | $108.30 | $76.46–$102.24 | — |
Inpatient: lowest $16.12, median $70.65, highest $108.30 — a 6.7× difference within the same market.
As an outpatient, the same code is billed by 6 facilities here, median $61.33 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 1 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 1 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
A creatine kinase (CK) test measures an enzyme released when muscle is damaged. It is used for muscle pain or weakness, after crush injuries or extreme exercise, and in people on statins with muscle symptoms.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.