also known as Selenium in Urine
Selenium is an antioxidant that plays an important role in reproduction, thyroid hormone metabolism, DNA synthesis, and protection from oxidative damage and infection. Selenium is readily available in many foods. This urine test is used to monitor industrial exposure to selenium or to determine a selenium deficiency. Deficient selenium levels can lead to: Viral cardiomyopathy in children and young women (called Keshan disease)Chronic osteoarthropathy in children (Kashin-Beck disease)Muscle tenderness and painSelenium levels that are too high can lead to: Abnormal nailsFacial flushingHair lossSevere gastrointestinal symptomsMuscle tendernessLightheadedness fatigueKidney failureCardiac failureMajor dietary sources of selenium include: Brazil nutsFish, especially yellowfin tunaBeef and organ meatsPoultryCottage cheeseWhole grainsShrimpSpinachSelenium deficiency can be more prevalent in people who are: Over the age of 90Undergoing total parenteral nutritionPatients undergoing kidney dialysisHave severe intestinal disorders or severely compromised intestinal functionAre gastrointestinal surgery patientsPeople living with HIVIndividuals who rely on food grown in selenium-deficient soil