CK (creatine kinase) test cost in Key West, FL — inpatient
In Key West-Key Largo, FL, 3 hospitals list a cash price for creatine kinase (CK) blood test, total as an inpatient: from $55.25 to $122.75, with a median of $55.25. The lowest listed price is at Fishermens Health and 1 other hospital. Across Florida, the median is $69.55 at 173 hospitals.
Cash prices at 3 facilities across 3 cities for code 82550, as an inpatient (admitted to hospital) . Collected Sep 27, 2026; the hospital files themselves were last updated between Mar 30, 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 Key West-Key Largo, FL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Fishermens Health lowest Marathon, FL · (305) 434-1000 CK (total) File of Mar 30, 2026 · source file | $55.25 | $85.00 | $2.76–$85.00 | 35% |
| Mariners Hospital lowest Tavernier, FL · (305) 434-3000 CK (total) File of Mar 30, 2026 · source file | $55.25 | $85.00 | $2.76–$85.00 | 35% |
| Lower Keys Medical Center Key West, FL · (305) 294-5531 CPK TOTAL File of Apr 1, 2026 · source file | $122.75 | $350.70 | $122.74–$350.70 | 65% |
Inpatient: lowest $55.25, median $55.25, highest $122.75 — a 2.2× difference within the same market.
As an outpatient, the same code is billed by 3 facilities here, median $55.25 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 3 of 3 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 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.
1 row held back from this comparison
It is priced below $1 or below a tenth of the national median for code 82550 ($53.40). 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.
| Hospital | Cash price | File |
|---|---|---|
| Lower Keys Medical Center Key West, FLL2154 CPK TOTAL | $1.25 | file |