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A member asked:
My serum magnesium blood level was 2.5. is it possible i'm still deficient since i didn't get my rbc magnesium checked?
3 doctors weighed in across 2 answers
Yes it may be: Rbc magnesium is the test is the most precise way to assess intracellular magnesium status this test does not require fasting and just don't take any suuplements the day of your blood test.You can take other prescription medicines.
Answered 1/19/2017
4.9k views
Magnesium: An ionized magnesium level might be slightly more accurate however magnesium is mostly an intracellular trace mineral so lab measurements are just reasonable estimations still.
Answered 2/28/2015
4.9k views
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