Muscles · U/L
CK (creatine kinase)
The ranges we use for CK (creatine kinase), with the source. Upload your report to see your value rated for your age and sex.
Ranges we useIFCC
| Rating | Range | What it means |
|---|---|---|
| Good | below 308 U/L | CK within the expected range. |
| Worth improving | 308 – 1000 U/L | Mildly to moderately raised. Often after exercise or muscle strain; repeat after about 7 days of rest. |
| Talk to a doctor | 1000 U/L and above | Markedly raised. With muscle pain or dark urine seek urgent advice (possible rhabdomyolysis). |
This marker also has 2 age- or sex-specific range sets in the app — the table shows the general one.
Source: IFCC
Articles about this marker
- Blood chemistry tests: normal values for ALT, AST, GGT, CRP, CK, creatinine and glucoseReading your report
This content is for information only and is not a substitute for medical advice. Talk to your doctor about your results.
Your number, not the average
Upload your report: we rate your exact value for your age and sex, show the source, and tell you what to do next.