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What are some possible results on a vitamin D-3 lab test?

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Quick Answer

The results of a vitamin D-3 lab test can indicate if an individual is deficient in vitamin D, has normal levels or has excessive levels of the vitamin, according to Hormone Health Network. Testing can also indicate the possible presence of kidney disease, sarcoidosis or some lymphomas.

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Full Answer

Human bodies need vitamin D-3 to absorb calcium and strengthen bones, notes WebMD. The current lower limit set on healthy vitamin D by the Endocrine Society for 25-hydroxyvitamin D is below 20 millimeters. This amount includes both levels of vitamin D-2 and D-3 combined. A test result with levels above this line are generally considered healthy. Levels above 200-hydroxyvitamin D may be toxic, causing problems such as kidney stones and constipation, as stated by WebMD.

Test results outside the norm for 1.25-dihydroxyvitamin D may indicate kidney disease, certain lymphomas or an inflammatory disease called sarcoidosis, according to Lab Tests Online.

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