I am joining up to grass roots health, they are doing a vitamin D study for a 5 year period and are offering Vitamin D testing for only 40.00 each time for twice a year for up to 5 years. You have to fill out questionares every time they test the vitamin D.
Here is the link
http://www.grassrootshealth.net/d-action
I am convinced I am severly deficient in Vitamin D, with all the PCOS, and lots of other symptoms I have. My doctor would not test my vitamin D levels, so this is a good alternative for me!!!!!