high level of creatin kinase total, serum

[marts230]

I am a 60 yr old male, my father died at 53 of a heart attack, I work out 5-7 days a week, 2 days weights and 3-4 days on a stationary bike for 40 minutes. My creatine kinase total came back at 287 on a blood test, I had fasted for over 11 hours, but I did work out the day before and I had a hamstring muscle pull at the time of the est and was under going physical therapy. Should I be concerned with the number, I did have a nuclear stress test in the last 2 years.

[Benjamin123]

CK is an enzyme which is present in skeletal muscle, brain, photoreceptor cells of the retina, hair cells of the inner ear, spermatozoa and smooth muscles.. It is mainly used as a marker of myocardial infarction (heart attack), rhabdomyolysis (severe muscle breakdown), muscular dystrophy, and  acute renal failure.
the result will vary if any muscle damage happend. In your case as you have a muscle injury, the result may be a false positive one. better re do it once its healed or go for other diagnostic evaluatuions

[Flycaster305]

I've been told that extreme physical activity prior to, or muscle injury would give a positive for this test.  I'd suggest you ask to be re-tested after resting for a day or two and when the hamstring muscle pull is healed.  The hamstring is a very large muscle and certainly, I would think, would influence the test.