CK testing and statin

Hello doctors,

I’m a 34M of Asian descent. About a year ago I was prescribed a statin to help manage high LDL cholesterol. It has worked tremendously; my LDL dropped by about 60% in the first 2 months or so after having started taking the statin daily.

Before I went on the medication, I had lab work done that included a CK test with a reading of 240 U/L. While I can’t quite recall the exact reason why this test was ordered, my guess was that it was to establish a “baseline” to see whether the statin was causing unintended muscle damage.

Fast forward a year later, and I recently went to see my doctor again for an annual physical. CK was tested again, and it remains elevated (349 U/L). In both times when I took the test, this year and last year, I had trained the morning of, which I suspect is what is contributing to this result.

Now, my doctor has asked that I retest CK after taking a break from exercise. I don’t want to come off as a non-cooperative patient, and it’s not like avoiding exercise for a couple days is that big of a deal, but at the same time I can’t help but think this is an example of doing blood work “just to see”, or just for purposes of getting a particular blood marker into a certain arbitrary “normal” range (as Dr. Baraki has raised concerns about). I am not experiencing any symptoms of muscle pain or rhabdo, and generally have no acute concerns regarding my health. I am also happy that I got on a statin and would be uncomfortable getting off of it, even if CK levels were a concern. Am I being unreasonable, or should I just take the CK test again after a break from training because that’s what my doctor ordered?

Thanks for all your great work, especially the podcast.

Given that you have no symptoms or concerns, it should not have been rechecked at all.

Thanks for the response. Ironically, before posting I had no idea that CK level was discussed at length on the most recent podcast episode on Rhabdomyolosis, or I would have realized how silly it was to ask about this. I was just hesitant to not comply with my doctor’s request to do a follow-up test, but your response has given me assurance that there need not be any concern.