Screening test for vitamin D deficiency is: (A) 7-dehydrocholestrol, (B) 1,25 dihydroxy vitamin D, (C) 25 hydroxy vitamin D, (D) Serum calcium levels
Answer is C. Total serum 25-hydroxyvitamin D (the major form of vitamin D that circulates in the body) is used for screening.Recently USPSTF (US preventive services task force) concluded that the evidence on screening for vitamin D deficiency in asymptomatic adults to improve health outcomes is insufficient