1 doctor weighed in:

CK was 369 U/L, should I be concerned? CK-MB was 2.5 ng/ml. Could it be ALS? No muscle weakness noted but twitching in arm.

1 doctor weighed in
Dr. Gurmukh Singh
Pathology

In brief: See below

All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that.
Having said that, Any muscular activity will raise CK level. You may visit this site for information on this topic: https://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/8336

In brief: See below

All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that.
Having said that, Any muscular activity will raise CK level. You may visit this site for information on this topic: https://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/8336
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