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  1. A few people can order their own blood test – Dec 2011
  2. Active level of vitamin D are not indicated by standard blood tests - Sept 2012
  3. 50,000 IU monthly safe to take without any vitamin D testing – RCT Dec 2013
  4. Bone tenderness weakly associated with vitamin D levels – Sept 2014
  5. Different measurements from 6 vitamin D testing systems – Mar 2012
  6. Diurnal variation in blood levels noted for post-menopausal women – 2002
  7. Day to Day blood test variation less than 8 percent - Aug 2010
  8. Comparison of vitamin D blood tests – worse case off by 15% – Aug 2010
  9. Huge variation in vitamin D test results - July 2010
  10. Health Insurance (UnitedHealth) restricting Vitamin D payments to only a few diseases – Dec 2018
  11. France restricts payments for Vitamin D tests – Dec 2015
  12. Low-cost Vitamin D testers (about 13 dollars in quantity) – Feb 2018
  13. Japanese need at least 30 ng of Vitamin D, test costs are now reimbursed – Nov 2016
  14. Increased vitamin D testing did not result in increased bone density – April 2013
  15. Measuring Vitamin D in body tissues, not just the blood (Brain in this case) – July 2019
  16. Body impedance can estimate body fat, and perhaps Vitamin D – Sept 2019
  17. Vitamin D deficiency of a group - 15 pcnt to 48 pcnt (depends on tester used) - Nov 2017
  18. Percent who are Vitamin D Deficient: 6, 9, or 22 – depends on testing system – Oct 2014
  19. 80 X increase in Vitamin D testing in Australia in a decade - June 2013
  20. After bone fracture, vitamin D unchanged but 1,25(OH)(2) D decreased – Jan 2013
  21. Alberta Canada also overwhelmed with vitamin D tests - Jan 2011
  22. After 245,000 free vitamin D tests, 121,000 supplemented, but only 5,400 had 2nd test – Oct 2011
  23. 6th Canadian province may stop paying for vitamin D testing – Sept 2010
  24. 20 percent change in vitamin D levels of critically ill during a 24 hour period – Oct 2011
  25. Canadians – 37 percent have less than 20 ng of vitamin D (after adjusting test results with standards) – Sept 2015
  26. Canadians losing yet another free medical test - vitamin D Nov 2010
  27. Child died in hospital, death due to low vitamin D, mother is suing hospital – Nov 2018
  28. BMD associated with free and bioavailable vitamin D – March 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. Excessive vitamin D testing in Australia – July 2012
  32. Consultation to medical professionals on Vitamin D Testing - Sept 2011
  33. How Alberta Canada restricts Vitamin D testing – May 2016
  34. How should Vitamin D be tested – a changing landscape – June 2016
  35. Hypothesis: Should test for unactivated Vitamin D, not activated – Feb 2018
  36. If you are obese, use sunscreen, or don't drink milk you may be vitamin D deficient – March 2012
  37. France restricts Vitamin D testing to 4 health problems, paper proposes 5 more – Nov 2016
  38. Low cost vitamin D Blood Tests
  39. Instant vitamin D Yes-No test now available
  40. Vitamin D levels observed to vary by 20 percent during a day – Feb 2019
  41. Big differences (~10 ng) in vitamin D test results, even when using the same type of tester – Aug 2015
  42. Vitamin D measurements vary with the same sample of blood – March 2014
  43. Tests for Vitamin D
  44. Problems with Vitamin D Testing – chapter – Aug 2019
  45. Vitamin D testers have different test results if there is chronic kidney disease – Sept 2019
  46. Tests for Vitamin D
  47. 94 X increase in Vitamin D testing in Australia (2000-2010, then they shut it down) – Dec 2019
  48. Active Vitamin D (Calcitriol) reference ranges, why too high is a problem– April 2015
  49. Chronic Kidney Disease reduced with 3600 IU vitamin D (50000 twice a month)– RCT Aug 2012
  50. Hypothesis – Optimize vitamin D at home by measuring excess Calcium in urine

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