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It is generally recommended to take a vitamin D supplement if you are deficient in vitamin D, which can be assessed through a blood test. Factors such as limited sun exposure, darker skin pigmentation, and certain health conditions may increase the need for supplementation. Consulting with a healthcare provider is advised to determine the appropriate dosage and duration of supplementation.
The normal weekly dose for someone with low Vitamin D levels is 50,000 units once or twice a week. You need to be sure your levels really are low before you take that much however. Your doctor will tell you how much Vitamin D is safe to take.
Go and test it out yourself it's out now :D I think it awesome but it can be difficult in some levels
HPLC is normally used to detect Vitamin D levels in blood. Some people need this test to make sure they are getting enough vitamin d in their diets and such.
Many doctors test adult women for Vitamin D levels in the blood at yearly check ups. If you are concerned, ask your doctor to check at your next physical, or make an appointment.
16 with parents signature or 18 to just go take it on your own.
1/2 depending on how many other vitamins you have taken. If you take to many, you are likely to get diarreah.
No
The permitted levels vary from country to country
8 on d-78 on the test of genius = -70
It depends on how much you have in your blood. See your doctor for a simple blood test and they will tell you how much Vitamin D to take.
D test is basically a serological test used to detect weak antigens (D antigen of Rh system) to prevent any transfusion mediated reaction in the recipient.