Organizer

1. Vitamin D blood test review of types
2. No easy task - history of blood tests for vitamin D
3. Henry Lahore Vit D test results
4. dose response testing is necessary
5. Huge vitamin D test variability - July 2010
6. Blood test results - huge variation from same source July 2010
7. Ontario evidence based analysis - Feb 2010
8. Ontario evidence based analysis - update June 2010
9. Ontario guidelines for vitamin D testing - June 2010
10. D list vitamin D testing in Canada - Dec 2010
11. Vitamin D testing by blood spot card is pretty good – Jan 2011.pdf
12. UK Workshop on vitamin D testing - 2010.pdf
13. Blood spot vitamin D - Jan 2011.pdf
14. Vitamin D testing inaccuracy
15. Test for D
16. 20 percent change in vitamin D levels of critically ill during a 24 hour period – Oct 2011
17. 4 popular vitamin D testers gave very different results (no surprise) – June 2021
18. 42X increased vitamin D testing of children, no increase in levels (too little vitamin D prescribed to make a difference) – July 2021
19. 50,000 IU monthly safe to take without any vitamin D testing – RCT Dec 2013
20. 6th Canadian province may stop paying for vitamin D testing – Sept 2010
21. 80 X increase in Vitamin D testing in Australia in a decade - June 2013
22. 94 X increase in Vitamin D testing in Australia (2000-2010, then they shut it down) – Dec 2019
23. A few people can order their own blood test – Dec 2011
24. Active level of vitamin D are not indicated by standard blood tests - Sept 2012
25. Active Vitamin D (Calcitriol) reference ranges, why too high is a problem– April 2015
26. After 245,000 free vitamin D tests, 121,000 supplemented, but only 5,400 had 2nd test – Oct 2011
27. After bone fracture, vitamin D unchanged but 1,25(OH)(2) D decreased – Jan 2013
28. Alberta Canada also overwhelmed with vitamin D tests - Jan 2011
29. Australia is considering cutting vitamin D testing – March 2011
30. Australians paying for most Vitamin D tests, 40 percent deficient in winter - March 2019
31. Big differences (~10 ng) in vitamin D test results, even when using the same type of tester – Aug 2015
32. BMD associated with free and bioavailable vitamin D – March 2011
33. Body impedance can estimate body fat, and perhaps Vitamin D – Sept 2019
34. Bone tenderness weakly associated with vitamin D levels – Sept 2014
35. Canadians – 37 percent have less than 20 ng of vitamin D (after adjusting test results with standards) – Sept 2015
36. Canadians losing yet another free medical test - vitamin D Nov 2010
37. Cancer patients at high risk of vitamin D deficiency were not tested as often (paradoxically) – July 2014
38. Chair-side vitamin D test for 80 nmol - Sept 2023
39. Child died in hospital, death due to low vitamin D, mother is suing hospital – Nov 2018
40. Chronic Kidney Disease reduced with 3600 IU vitamin D (50000 twice a month)– RCT Aug 2012
41. Comparison of vitamin D blood tests – worse case off by 15% – Aug 2010
42. Consultation to medical professionals on Vitamin D Testing - Sept 2011
43. Day to Day blood test variation less than 8 percent - Aug 2010
44. Different measurements from 6 vitamin D testing systems – Mar 2012
45. Diurnal variation in blood levels noted for post-menopausal women – 2002
46. Epimers of Vitamin D: A Review – Jan 2020
47. Excessive lipids in blood can result in very low vitamin D test results – Oct 2020
48. Excessive vitamin D testing in Australia – July 2012
49. France restricts payments for Vitamin D tests – Dec 2015
50. France restricts Vitamin D testing to 4 health problems, paper proposes 5 more – Nov 2016

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