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New vitamin D tests called 'inaccurate'

from Advance for Medical Laboratory Professionals

Blood tests to measure vitamin D deficiency are among the most frequently ordered tests in medicine. But a Loyola University Chicago Stritch School of Medicine study of two new vitamin D tests found the kits are inaccurate in many cases. Researchers examined how well the two new tests performed on 163 randomly selected blood samples. In 40 percent of one and 48 percent of the other, results were at least 25 percent too high or 25 percent too low. more


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