Lab test
Selenium Urine Test – Deficiency Testing
This page explains the selenium urine test – deficiency testing, what it measures, and how to order it. This urine test measures selenium levels in your body. It can help assess exposure to industrial selenium or identify potential selenium deficiency.
What this test is
The Selenium Urine Test analyzes a urine sample to quantify the amount of selenium present. Selenium is a trace mineral that acts as an antioxidant and is essential for various bodily functions, including thyroid health and immune system support.
What it measures
- Selenium — reflects selenium intake and exposure
What the test involves
This test requires a urine sample, which you will typically provide at a collection site. You will be given specific instructions on how to collect a clean-catch urine sample.
Why it is often ordered
A clinician may order this test to evaluate your selenium status, particularly if there is concern about inadequate intake or excessive exposure. It can help in understanding your body's selenium balance.
Preparation
Follow the specific preparation instructions provided by the laboratory performing the test. These instructions will guide you on sample collection and any necessary dietary or medication adjustments.
How results are reported
Your test results will indicate the level of selenium detected in your urine. Reference ranges, which help interpret these levels, vary between laboratories and should be discussed with your healthcare provider.
Before you go
- Specific collection instructions
- How to prepare your sample
- When to expect results
FAQ
Frequently asked questions
What is selenium?
Selenium is a mineral that is essential for human health. It plays a crucial role as an antioxidant, protecting cells from damage. It is also important for immune function and thyroid hormone metabolism.
What are the symptoms of selenium deficiency?
Symptoms of selenium deficiency can be varied and may include muscle weakness, fatigue, impaired immune function, and thyroid problems. However, severe deficiency is rare in many parts of the world.
Can I get too much selenium?
Yes, it is possible to have too much selenium, a condition known as selenosis. Symptoms can include hair loss, nail problems, gastrointestinal upset, and neurological issues. This test can help assess both deficiency and excess.
How is selenium obtained?
Selenium is obtained through diet, with good sources including Brazil nuts, seafood, organ meats, muscle meats, cereals, and dairy products. The amount of selenium in plant-based foods depends on the selenium content of the soil where they are grown.
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Locations
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