• Selenium
1 1

Selenium

Selenium

$99.00
$99.00
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The Selenium test measures the level of selenium in your blood, an essential trace mineral that plays a critical role in antioxidant defense, thyroid function, and immune health. Selenium deficiency can lead to various health issues, including thyroid dysfunction and increased oxidative stress. This test is particularly beneficial for individuals looking to understand their selenium status and make informed dietary choices. Understanding your selenium levels can help guide supplementation and support overall health.

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About This Test

Reason to Check It

"Want to improve your thyroid hormone function? Make sure you have plenty of selenium which you can get in many natural foods like brazil nuts, sunflower seeds and eggs."- Dr. Alan Hopkins

Test Preparation

  • Fasting (Overnight) required for 10-12 hours


Please Note: We recommend overnight fasting and an early morning blood draw for all tests, even if no special preparation is required. Remember, it is OK to drink plenty of water. Drinking water helps hydrate you and makes it easier for the phlebotomist to obtain your blood sample.

Test Type and Method

Test Type:

  • Blood


Test Method:

  • In-person Blood Draw

Post-Test Notes

  • Once your specimen is collected, test results are typically processed and available within a few business days. Processing times may vary depending on the test. Your results will be delivered in a clear, easy-to-understand report. If any values fall outside the expected range, you may receive a follow-up call from an independent healthcare coordinator.

Lab Testing is Simple, Fast, and Convenient

Choose the Individual Test or Lab Panel that suits your health needs. You’ll receive your lab requisition within 24 hours. Visit any of the 3,000+ Quest Diagnostics centers using the button below. Once your sample is collected, your results will be securely delivered via email within 7–10 days.

View Quest Draw Locations

Lab Testing is Simple, Fast, and Convenient

Choose the Individual Test or Lab Panel that suits your health needs. You’ll receive your lab requisition within 24 hours. Visit any of the 3,000+ Quest Diagnostics centers using the button below. Once your sample is collected, your results will be securely delivered via email within 7–10 days.

View Quest Draw Locations