Vitamin D test variability improving rapidly

This is not surprising given that a deficiency state is seen in a high proportion of the tested population, a fact that has surprised many professionals given Australia’s love of sunshine and the relationship between vitamin D levels and sun exposure. 

One concern about the high level of vitamin D deficiency has been the reported variability of vitamin D testing results.

While this variability between tests and laboratories has been a problem, pathology laboratories have been acutely aware of the problem and have undertaken substantial work to establish their own reference ranges, and have confidence in interpreting the results of their own tests.

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