I was just looking this up after reading this article and discovered that an NHS lab can send you a test kit in the post for £28, which will likely be cheaper t

I was just looking this up after reading this article and discovered that an NHS lab can send you a test kit in the post for £28, which will likely be cheaper than any private option. http://www.vitamindtest.org.uk/ http://www.vitamindtest.org.uk/