magnesium rbc blood work

Wanted to test the effectiveness of MagSRT on raising my erythrocyte magnesium (Magnesium RBC test). I did not take any magnesium supplements for a month prior to the first test (May 22nd 2023). Base Magnesium RBC was 5.2 mg/dL. Starting on May 23rd I began taking 2 MagSRT pills per day...