Cheap Vitamin D Testing
Just came across this: Grassrootshealth Vitamin D testing trial. You fill in a brief online questionnaire (less than 5 mins) and you get the chance to do a vitamin D test for only $30 (roughly £20). The full "trial" lasts 5 years (one test every 6 months), but you have the option of just signing up for one test with no obligation to continue (you'll get a reminder email in 6 months). The test they use is the ZRT pin-prick test (the one Red recently took). It is normally $65 - $75.