Lotus97
Senior Member
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I've been taking over 5000 iu vitamin D, but my Vitamin D Hydroxy 25 was only 30.2 ng/mL. When I've been tested in the past my vitamin D levels were higher so I don't know what's going on.
I'd like to know what the reasons as to why my vitamin D could be low. There was some mention about possible Th1/Th2 imbalances as a cause. Also some information about Lyme disease, mycoplasma, and autoimmune conditions being responsible for vitamin D deficiency. I do have Lyme so this another possibility.
There were some articles about certain labs' vitamin D tests being inaccurate, but I don't know if my doctor's office used the same lab or not.
http://www.medpagetoday.com/MeetingCoverage/ENDO/33516
I'd like to know what the reasons as to why my vitamin D could be low. There was some mention about possible Th1/Th2 imbalances as a cause. Also some information about Lyme disease, mycoplasma, and autoimmune conditions being responsible for vitamin D deficiency. I do have Lyme so this another possibility.
There were some articles about certain labs' vitamin D tests being inaccurate, but I don't know if my doctor's office used the same lab or not.
http://www.medpagetoday.com/MeetingCoverage/ENDO/33516
Two widely used tests to determine vitamin D status produced results that exceeded the allowable limits for error in at least 40% of cases, according to a study reported here.
Using liquid chromatography/mass spectrometry (LC/MS) as the standard, variance by the Abbott Architect and Siemens Centaur-2 tests ranged from -60% to +80%. The maximum allowable error for test results is ±25%, Earle Holmes, PhD, said at ENDO 2012.
Errors with both tests tended to be on the side of overestimating the frequency of vitamin D deficiency, he added