“In some countries, at-home vitamin D deficiency tests are available, but they require a finger prick blood sample. To determine vitamin D sufficiency status in a more convenient and less ...

A vitamin D test is a blood test that measures the level ... After your appointment, you should be able to go home and resume ...

Scientists are looking for volunteers to take part in a trial to see if taking vitamin D can give the immune system ... for six months if a finger-prick test shows they are deficient in the ...