Since so many of us with or recovering from Cushing's have very low Vitamin D, this is (oh geez...Cushie brain...word for "impactful"...) weighty. (Does that word work?)
Seriously, I had Vitamin D testing done through my local lab and it was sent to Quest in October. One value came back high. Thankfully, my endo didn't trust it and ordered another. It was not sent to Quest, and it came back very low, which is my "normal". By the time I did it a few weeks had passed, but the difference was huge.
An erroneously high result may mean patients will not take vitamin D
supplements when perhaps they should, doctors said. And an erroneously low test
result might lead in rare instances to a toxic overdose of vitamin D. When the
Quest tests have been inaccurate, the reading has typically been too high,
although not in all cases.
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