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  1. 50,000 IU monthly safe to take without any vitamin D testing – RCT Dec 2013
  2. 80 X increase in Vitamin D testing in Australia in a decade - June 2013
  3. Active level of vitamin D are not indicated by standard blood tests - Sept 2012
  4. A few people can order their own blood test – Dec 2011
  5. Body impedance can estimate body fat, and perhaps Vitamin D – Sept 2019
  6. Bone tenderness weakly associated with vitamin D levels – Sept 2014
  7. Comparison of vitamin D blood tests – worse case off by 15% – Aug 2010
  8. Day to Day blood test variation less than 8 percent - Aug 2010
  9. Diurnal variation in blood levels noted for post-menopausal women – 2002
  10. Different measurements from 6 vitamin D testing systems – Mar 2012
  11. Epimers of Vitamin D: A Review – Jan 2020
  12. France restricts payments for Vitamin D tests – Dec 2015
  13. Health Insurance (UnitedHealth) restricting Vitamin D payments to only a few diseases – Dec 2018
  14. Huge variation in vitamin D test results - July 2010
  15. Japanese need at least 30 ng of Vitamin D, test costs are now reimbursed – Nov 2016
  16. Increased vitamin D testing did not result in increased bone density – April 2013
  17. Medicare now pays for just one vitamin D test , but 20 CT scans for smokers – Feb 2015
  18. Measuring Vitamin D in body tissues, not just the blood (Brain in this case) – July 2019
  19. Low-cost Vitamin D testers (about 13 dollars in quantity) – Feb 2018
  20. No vitamin D test needed before supplementing (typically) – April 2014
  21. Only 15 percent change in vitamin D measurements in same month – April 2010
  22. One vitamin D blood test said toxic the other said normal – Aug 2010
  23. One vitamin D test system appears to read 12% too high – Aug 2010
  24. One of the 4 vitamin D metabolites increases faster than the others – July 2012
  25. Of the few who needed a second vitamin D test only 20 percent had became sufficient – Aug 2014
  26. Percent who are Vitamin D Deficient: 6, 9, or 22 – depends on testing system – Oct 2014
  27. New vitamin D tester approved – not very accurate – July 2013
  28. Saliva and Vitamin D – many studies
  29. The many forms of vitamin D in the blood
  30. Technical comparison of vitamin D testers – July 2013
  31. Task force confirms - not much benefit from low Vitamin D supplementation – Nov 2014
  32. UK (NHS) now provides blood taking at home (Vitamin D, panel, etc.) – June 2019
  33. Vitamin D – whom to test and whom to treat – May 2015
  34. 20 percent change in vitamin D levels of critically ill during a 24 hour period – Oct 2011
  35. 6th Canadian province may stop paying for vitamin D testing – Sept 2010
  36. 94 X increase in Vitamin D testing in Australia (2000-2010, then they shut it down) – Dec 2019
  37. After 245,000 free vitamin D tests, 121,000 supplemented, but only 5,400 had 2nd test – Oct 2011
  38. After bone fracture, vitamin D unchanged but 1,25(OH)(2) D decreased – Jan 2013
  39. Alberta Canada also overwhelmed with vitamin D tests - Jan 2011
  40. Australia is considering cutting vitamin D testing – March 2011
  41. Australians paying for most Vitamin D tests, 40 percent deficient in winter - March 2019
  42. Big differences (~10 ng) in vitamin D test results, even when using the same type of tester – Aug 2015
  43. BMD associated with free and bioavailable vitamin D – March 2011
  44. Canadians – 37 percent have less than 20 ng of vitamin D (after adjusting test results with standards) – Sept 2015
  45. Canadians losing yet another free medical test - vitamin D Nov 2010
  46. Child died in hospital, death due to low vitamin D, mother is suing hospital – Nov 2018
  47. Consultation to medical professionals on Vitamin D Testing - Sept 2011
  48. Excessive vitamin D testing in Australia – July 2012
  49. France restricts Vitamin D testing to 4 health problems, paper proposes 5 more – Nov 2016
  50. How should Vitamin D be tested – a changing landscape – June 2016

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