Creatine kinase

Muscle Health

A healthy result should fall into the range 24 - 204 U/L, 0.41 - 3.47 µkat/L, or 24.00 - 204.00 IU/L.

Creatine kinase (CK) is an enzyme found primarily in the brain, skeletal muscles, and heart. Conditions that cause damage to any of these three areas produce an elevated level of CK. For this reason, CK tests are often run to detect muscle damage, especially if someone is taking a drug such as a statin, using cocaine, or has been exposed to a toxin. If you’re experiencing chest pain or weakness your doctor may order a CK test to determine if you’ve had a heart attack. It is also common for doctors to use this test to evaluate the extent of sports injuries. Creatine kinase levels reflect the amount of muscle in the body, and as such men typically have higher levels than women. Finally, a CK test may be used to diagnose rhabdomyolysis, a condition characterized by the rapid breakdown of muscle tissue. It is worth noting that a normal level of CK does not necessarily mean that there is no muscle damage. It could mean that the damage occurred long enough ago for levels to return to normal.  Frequently, a succession of CK tests are run as changes in CK levels due to muscle damage can take hours to present.

Normal Ranges:

Normal CK levels change drastically depending on factors such as age, gender, and activity level. Generally, 24-204 U/L is considered normal. 

Creatine kinase result calculator

insert the value from you Creatine kinase test result.

Is your Creatine kinase too high or too low?
Upload your lab report and instantly interpret your result.

DIY Health One

One Lab Report Interpretation

  • One lab report interpretation
  • Use self upload form
  • 800+ biomarkers explained
  • Recommendations
  • Pay per additional interpretations
  • Report uploading support*

15 $

Analyze and Interprete Now

*Additional costs may apply

DIY Health Track

Unlimited Lab Report Interpretations

  • Unlimited lab report interpretations
  • Use self upload form
  • 800+ biomarkers explained
  • Recommendations
  • Online support
  • We do the uploading for you*

59 $/year

Analyze and Interprete Now

*4 report uploads by our team are included per year

Sign Up, Upload Tests, Get Insights and Improve with HealthMatters.io.

Sign up now

Your Privacy And Security

At HealthMatters, we're committed to maintaining the security and confidentiality of your personal information. We've put security measures in place to help protect against the loss, misuse or alteration of information under our control. We use procedural, physical and electronic security methods designed to prevent people who aren't authorized from getting access to this information. Our internal code of conduct adds additional privacy protection. See our Privacy Policy for more information.