**NOTE: All laboratory testing requires an authorizing physician. DHA Laboratory offers a patient direct program that partners you with an authorizing physician. If you have any additional questions regarding the availability of testing, please contact our laboratory by telephone or email**
Beta Carotene, a fat soluble nutrient, is a precursor to vitamin A, so having a beta carotene deficiency may lead to a vitamin A deficiency. Excessive vitamin A intake may lead to headaches, loss of appetite, nausea and diarrhea, skin changes and potential birth defects. Beta carotene is the form of vitamin A that is derived from plant sources.