The test my doctor recommends is the 25-hydroxy Vitamin D test and I think is under $100 the last time I had one done however a blood sample is needed. I think

The test my doctor recommends is the 25-hydroxy Vitamin D test and I think is under $100 the last time I had one done however a blood sample is needed. I think only a physician can order it for you. https://medlineplus.gov/ency/article/003569.htm https://medlineplus.gov/ency/article/003569.htm (25-hydroxy vitamin D test information) http://www.questdiagnostics.com/home/physicians/testing-services/by-test-name/vitamind http://www.questdiagnostics.com/home/physicians/testing-serv... Vitamin D deficiency is no joke and as we spend more time indoors we need to pay attention to this. If you search for "Vitamin D deficiency cancer" you will find many sources linking deficiency to cancer and other diseases.