Floaters and Flashing Lights What Are Floaters? Floaters are dark specks in the form of dots, circles, lines, or cobwebs that seem to move across your field of vision. They are most noticeable when you are looking at a light-coloured background, such as a clear sky or a white wall.
Testing magnesium levels to find if they are normal requires a simple blood draw. Levels are considered normal in the range of 1.7 to 2.2 mg/dL. Your doctor might choose to test your magnesium levels if you have tested low for potassium and calcium or if you have a history of kidney disease. Sometimes your body will released store magnesium from your bones to make up for a deficiency.
Determining the Correct Dosage of Magnesium. Initially it was thought that adults needed between 100 and 150 mg of magnesium per day in order for the body to function optimally. However, new research has shown that up to 75% of the worldÃ¢â¬â¢s population is in fact severely deficient in this essential mineral.