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Selenium

Measures blood selenium to check for low or high levels that affect thyroid, immunity, and overall health.

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SAMPLE TYPE
Blood
FASTING REQUIRED
No
GENDER
Male/Female
GET REPORTS IN
24 hours
TEST INCLUDED
1
customers
20K+Customers
certified
CertifiedLabs
rating
4.5+Rating
proven
ProvenAccuracy

What is a Selenium Test?

This test measures the amount of selenium in your blood. Selenium is a trace mineral the body needs in small amounts. It helps protect cells from damage and supports the immune system. It also plays a role in thyroid hormone production and overall metabolism. Doctors use the test to check for deficiency when symptoms like fatigue, muscle weakness, or hair loss appear. They also use it to monitor people taking supplements, those with malabsorption or after stomach surgery, and to detect toxicity if intake is very high. Results help guide nutrition and treatment decisions.

Selenium Test Preparation

No special preparation is required.

Selenium Test Parameters

The Selenium test evaluates various parameters related to the different components. Here are the main parameters that are checked in the test:

  • Single test

Why Take a Selenium Test?

Selenium is often ordered as part of a trace element or micronutrient panel. Doctors may request it when a person has unexplained fatigue, muscle weakness, hair loss, or thyroid problems. It helps diagnose deficiency and can detect excess from high-dose supplements. Low or high results can stem from poor diet, malabsorption, certain medical treatments, or supplement use. A family history of thyroid or metabolic disease may make testing more important.

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Frequently asked questions

For any unanswered questions, reach out to our support team via email. We will assist you as soon as possible

What is selenium used for?plus

Selenium is a trace mineral essential for antioxidant defense (component of glutathione peroxidases), thyroid hormone metabolism (iodothyronine deiodinases), immune function, DNA synthesis and reproductive health. Adequate selenium supports protection against oxidative damage, normal metabolic rate and immune response; deficiency can impair thyroid function and immunity, while excessive intake is toxic.

Is it good to take selenium daily?plus

Selenium is an essential trace mineral important for antioxidant defense, thyroid and immune function. Daily intake at recommended levels (about 55 µg for most adults, about 60 µg in pregnancy) is beneficial, but high doses can cause toxicity (hair/nail loss, gastrointestinal and neurological symptoms). Most people meet needs from diet; take supplements only if deficient or advised by a healthcare professional. Do not exceed 400 µg/day.

Is selenium a programming language?plus

No. Selenium is not a programming language. It is primarily a chemical element and essential dietary micronutrient important for antioxidant enzymes and thyroid function. Separately, Selenium is the name of a popular open-source browser automation framework used for testing web applications; it’s a tool/library, not a language, and is used with languages like Java, Python, C# and JavaScript.

What foods are high in selenium?plus

Foods high in selenium include Brazil nuts (one or two nuts provide daily needs), seafood such as tuna, sardines and shrimp, organ meats and muscle meats (liver, beef, chicken, pork), eggs and dairy, whole grains and cereals, seeds (sunflower) and some mushrooms. Selenium content varies with soil and farming practices; amounts vary widely by region.

What are the signs of selenium deficiency?plus

Selenium deficiency can cause fatigue, muscle weakness or pain, hair loss and brittle nails, and weakened immunity leading to frequent infections. It may impair thyroid function (cold intolerance, weight changes), cause mood or cognitive disturbances, and reduce male fertility (low sperm motility). Severe deficiency can contribute to cardiomyopathy and raise risk of certain chronic conditions.

Why is selenium good for health?plus

Selenium is an essential trace mineral that supports antioxidant defenses, helping selenoproteins (like glutathione peroxidases) neutralize free radicals and reduce oxidative damage. It’s crucial for proper thyroid hormone metabolism, immune system function, and reproductive health. Adequate selenium helps protect cells, supports infection response, and contributes to overall metabolic and cardiovascular health; both deficiency and excess can cause problems, so intake should be balanced.

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Deloitte
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Vijay Bisht was friendly, helpful, and made our home test process seamless. Grateful for his timely support and follow-up.

Usha Parvathy

Partner at Deloitte

Deloitte
starstarstarstar

A big thank you to Shikhar from the Visit app for going above and beyond to arrange a last-minute appointment during an urgent situation. His seamless coordination truly made a difference.

Tejas Baxix

Associate Vice President

HDFC Life
starstarstarstarstar

A clean facility enhances experience. Quick checkups are a plus. Miss Rinku from Aditya Birla Health Insurance provided excellent service and handled our files well.

Sadaanand Asai

Employee

Deloitte
starstarstarstar

“The service was excellent—she was helpful, efficient, and made my recovery smooth and stress-free. Her support made a real difference.”

Ishan Kaul

Manager Administration

Deloitte
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“Thank you, Shared Gupta, for the great support with my reimbursement claims and Wipro health packages. Truly appreciated!”

Karen Colaco

Employee

Deloitte
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Thank you, Rinku. I appreciate your help during my visit. The hospital staff were courteous and professional. Overall, a very good experience!

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Employee

Deloitte
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I want to share my feedback on the help I received for my health checkup. I was happy with the guidance and support. Thank you for your assistance; it made the experience stress-free.

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Huge shoutout to Shikhar from the Visit app! He has been incredibly supportive during emergencies — always responsive and ready to help. Truly impressed by his dedication and calm efficiency.

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I want to share my feedback on the help I received for my health checkup. I was happy with the guidance and support. Thank you for your assistance; it made the experience stress-free.

Rahul Shelke

Employee

reserveBank
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Huge shoutout to Shikhar from the Visit app! He has been incredibly supportive during emergencies — always responsive and ready to help. Truly impressed by his dedication and calm efficiency.

Somchand

Employee

lic
starstarstarstar

“I connected with the concierge team today and spoke with Vijay—he was helpful and made a real effort to address my concerns.”

Archana Bhutani

Employee

McKinsey
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I appreciate Shreshta's outstanding support. She kept me updated on my medicals after hours and ensured everything went smoothly. Her proactive communication and care made a big difference.

Nirmal S

Employee

Wipro
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“Grateful to Shikhar for finding a cataract specialist at a convenient time and ensuring a smooth experience. A true asset to the Visit team!”

Shilpa Gupta

Employee

Wipro
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Hi Aniket, Annu, Mayur, I appreciate Shikhar's support in organizing clinic appointments for my child at odd hours. It's a sensitive matter for any parent, and I'm thankful for his understanding.

Nikhil Sobti

Employee

adityaBirla