Hi, 2 years ago I was diagnosed
with NO
vitamin D in my system at all even though I had been taking multi vitamins
with a total of over 1000 ui daily of vit D for many years in a tablet form. The reason for the test: memory loss, fatigue, speech, swelling, pain, vision, weight gain, numbness, hair falling out, etc for over 4 years that no doctor could figure out what was wrong with me & I finally asked for the actual vit D test..