Selenium
Selenium is an essential trace element vital for various physiological functions, including antioxidant defense, thyroid hormone metabolism, and immune response. The Selenium Test evaluates the concentration of selenium in the blood, aiding in identifying deficiencies or toxicities that may impact health.
Test details
Sample type
Blood
Time of day
No specific time required
Fasting required
No
Results timeframe
Within 7 days
Preparation
No special preparation required
What's measured in this test
Selenium
A mineral that supports the immune system.
Common reasons for testing
- Assessing nutritional status – Determines if selenium levels are within the optimal range for proper physiological function.
- Identifying deficiency – Detects low selenium levels that may lead to symptoms like muscle weakness, fatigue, or impaired immune function.
- Detecting toxicity – Identifies elevated selenium levels that could cause adverse effects such as gastrointestinal disturbances, hair loss, or neurological issues.
- Monitoring supplementation – Evaluates the effectiveness and safety of selenium supplementation in individuals with known deficiencies.