For suspected Vitamin D deficiency, which two analytes are ordered and how would they appear?

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Multiple Choice

For suspected Vitamin D deficiency, which two analytes are ordered and how would they appear?

Vitamin D is essential for absorbing calcium and phosphate from the gut. When vitamin D is deficient, both minerals aren’t absorbed well, so their levels in the blood tend to drop. The body may respond to low calcium by increasing PTH, which can further lower phosphate by increasing its excretion, but the initial and consistent finding in deficiency is reduced levels of both minerals. So, in suspected vitamin D deficiency, you’d expect decreases in both calcium and phosphorus.

Vitamin D is essential for absorbing calcium and phosphate from the gut. When vitamin D is deficient, both minerals aren’t absorbed well, so their levels in the blood tend to drop. The body may respond to low calcium by increasing PTH, which can further lower phosphate by increasing its excretion, but the initial and consistent finding in deficiency is reduced levels of both minerals. So, in suspected vitamin D deficiency, you’d expect decreases in both calcium and phosphorus.

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