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Selenium, Random Urine with Creatinine
Test Code16867
Preferred Specimen
7 mL random urine in an acid-washed container
Minimum Volume
2 mL
Instructions
Collect urine in an acid-washed plastic container. Avoid worksite collection. Send aliquot in a Specialty tube.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 5 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Setup Schedule
Set up: Tues, Thurs, Sat; Report available: 3-6 days
Clinical Significance
Selenium is considered an essential trace element. It enters the food chain through plants. Selenium plays an important role in the control of thyroid hormone metabolism. Selenium deficiency may cause reduced growth rates, owing to a feedback response, which lowers tri-iodothyronine-mediated synthesis of growth hormone in the pituitary, while a combined deficiency of selenium and iodine exacerbates hypothyroidism. Selenium is important for proper reproductive performance.
