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.
What is a normal iron level range? Quick Answer. Normal iron level range is 75 to 175 micrograms per deciliter for adult males, 65 to 165 micrograms per deciliter for adult females, 50 to 120 micrograms per deciliter for children, and 100 to 250 micrograms per deciliter for newborns, according to TheFreeDictionary.com.