One common, and harmless, cause of elevated bilirubin is Gilbert's syndrome, a deficiency in an enzyme that helps break down bilirubin. Your doctor may order further tests to investigate your condition. Bilirubin test results also may be used to monitor the progression of certain conditions such as jaundice.
Vitamin A sources:  Vitamin A is found in dark green and yellow vegetables and yellow fruits, such as broccoli spinach, turnip greens, carrots, squash, sweet potatoes, pumpkin, cantaloupe, and apricots, and in animal sources such as liver, milk, butter, cheese, and whole eggs.Function and food sources of Vitamin A.itamin A sources:  Vitamin A is found in dark green and yellow vegetables and yellow fruits, such as broccoli spinach, turnip greens, carrots, squash, sweet potatoes, pumpkin, cantaloupe, and apricots, and in animal sources such as liver, milk, butter, cheese, and whole eggs. List All Nutrient Information.
The vitamin A found in plants serves different functions than the vitamin A found in animals. The animal sources of vitamin A are liver, whole milk, and fortified foods, and the plant sources include colorful fruits and vegetables like carrots, spinach, kale, and cantaloupe.The recommended dietary allowances (RDA) for vitamin A are listed as international units (IU) of retinol activity equivalents (RAE).he animal sources of vitamin A are liver, whole milk, and fortified foods, and the plant sources include colorful fruits and vegetables like carrots, spinach, kale, and cantaloupe.