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

so local laboratory costs should be checked before telling the patient that a vitamin D test is needed. An example of the greater need for utilizing the vitamin D blood test are men on androgen or ...

If a lab test reveals low levels of vitamin D, your healthcare provider may recommend supplementation. The safe upper limit for vitamin D supplementation is 4,000 IU or 100 mcg per day, so it’s ...

10 mcg = 400 IU. 15 mcg = 600 IU. 20 mcg = 800 IU. It is much easier to access the patient’s need after a vitamin D blood test. Few individuals would allow their clinician to simply guess an ...