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A member asked:

Is there a significant difference in serum potassium & magnesium vs rbc (red blood cell) potassium & magnesium??

A doctor has provided 1 answer

Of COURSE: Basic biology, Matt. Magnesium and potassium are cations that are concentrated by the body inside of cells rather than outside.

Dr Altman agreed

Answered 5/31/2016

1.4k views

Thank

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