A group of 6,000 people have vitamin D levels higher than 50 ng – GrassrootsHealth
6,000 as of March 2014.
Expect to soon announce an 'open access' database
Dr. Mercola joined the D*action project in early 2013
GrassrootsHealth Charts include
Data from GrassrootsHealth was reformated by Vitamin D Life to make the following
Grassroots
GrassrootsHealth is sponsoring the use of blood spot test kits (laboratory analysis done by ZRT Labs) for a $65.00 + $5 shipping.
The tests are to be done twice a year by each individual along with the submission of some basic health data.
The kits are not available as a ‘stand alone’ without health data.
You have to fill in some information on amount of vitamin D you are taking, etc
They provide a quantity price discount. I suspect all kits are shipped at the same time)
1 test - $65 + $5 shipping
2 tests - $63/test + $5 shipping
10 test - $60/test + $5 shipping
Which, one supposes, will be included in an update to the graph shown below.
Here is a Grassroots Chart as of April 2012
