Indicative of cystic fibrosis. An abnormal test is most likely due to CF. To be able to accurately interpret sweat test results, an appropriate volume of sweat must be obtained. Acceptable volumes of sweat are 75 mg for the Gibson-Cooke procedure and 15 ÂµL for the MacroductÂ® procedure.
Beta-carotene is a pigment found in plants that gives them their color. The name beta-carotene is derived from the Latin name for carrot. It gives yellow and orange fruits and vegetables their rich hues. Beta-carotene is also used to color foods such as margarine.In the body, beta-carotene converts into vitamin A (retinol). We need vitamin A for good vision and eye health, for a strong immune system, and for healthy skin and mucous membranes.Taking big doses of vitamin A can be toxic, but your body only converts as much vitamin A from beta-carotene as it needs.eta-carotene is a pigment found in plants that gives them their color. The name beta-carotene is derived from the Latin name for carrot. It gives yellow and orange fruits and vegetables their rich hues. Beta-carotene is also used to color foods such as margarine.
Beta-carotene is one of a group of red, orange, and yellow pigments called carotenoids. Beta-carotene and other carotenoids provide approximately 50% of the vitamin A needed in the American diet. Beta-carotene can be found in fruits, vegetables, and whole grains.It can also be made in a laboratory. An eye disease called age-related macular degeneration (AMD). 2  Taking beta-carotene by mouth along with vitamin C, vitamin E, and zinc daily, seems to help prevent vision loss and worsening of AMD in people with advanced AMD. Taking beta-carotene plus antioxidants but without zinc does not seem to improve advanced AMD.