Also known as Ergocalciferol (Vitamin D2); Cholecalciferol (Vitamin D3); Calcidiol (25-hydroxyvitamin D[25(OH)D]); Calcifidiol (25-hydroxy-vitamin D); Calcitriol (1,25 dihydroxy-vitamin D [1,25(OH)(2)D]); 25-hydroxyvitamin D; 1,25 dihydroxyvitamin D
Vitamin D is also known as Ergocalciferol (Vitamin D2); Cholecalciferol (Vitamin D3); Calcidiol (25-hydroxyvitamin D[25(OH)D]); Calcifidiol (25-hydroxy-vitamin D); Calcitriol (1,25 dihydroxy-vitamin D [1,25(OH)(2)D]); 25-hydroxyvitamin D; 1,25 dihydroxyvitamin D
Vitamin D level is frequently checked in Pathology Lab along with some of the other tests such as Calcium; Phosphorus; PTH; Magnesium; Bone Markers; Trace Minerals
The lab test for Vitamin D level is useful to determine if you have a vitamin D deficiency; if you are receiving vitamin D supplementation, to determine if it is adequate.
Your health care provider may have ordered a vitamin D test if you have symptoms of a vitamin D deficiency (not enough vitamin D). These symptoms include:
The test may be ordered if you are at a higher risk for a vitamin D deficiency. Risk factors include:
In addition, breastfed babies may be at a higher risk if they aren't taking vitamin D supplements.
If your results show a deficiency in vitamin D, it may mean you are:
A low result may also mean your body is having trouble using the vitamin as it should, and may indicate kidney or liver disease.
If your results show you have an excess of (too much) vitamin D, it is most likely due to taking too many vitamin pills or other supplements. Too much vitamin D can cause damage to your organs and blood vessels.
To learn what your results mean, talk to your health care provider.