Medically reviewed by Soma Mandal, MD A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in ...

in urine as a cost-effective way to improve diet and health. “In some countries, at-home vitamin D deficiency tests are available, but they require a finger prick blood sample. To determine ...

Some health insurances cover vitamin D testing and some do not, and prices vary from $10 to $50, so local laboratory costs should be checked before telling the patient that a vitamin D test is needed.

People who join would be sent pills in the post to take daily for six months if a finger-prick test ... vitamin D offers protection against Covid. "Vitamin D supplements are low in cost, low ...