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Selenium

Residents of Saidapet and Guindy, Chennai can book Selenium at GetVisit , NABL-accredited labs, home collection, same-day digital results, and cashless OPD across the city. This test measures TSH and thyroid hormone levels to diagnose hypothyroidism, hyperthyroidism, or autoimmune thyroid disease.
What is a Selenium Test in Chennai ?
What is Selenium?
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 is particularly relevant in India, where hypothyroidism and autoimmune thyroid disease are among the most prevalent endocrine disorders , especially in women aged 25 to 50.
What does Selenium measure?
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. TSH is the most sensitive marker , it rises before T4 falls in early hypothyroidism, and falls before T3/T4 rise in early hyperthyroidism. A normal TSH effectively rules out clinically significant dysfunction.
What symptoms suggest Selenium may be needed?
A doctor may order Selenium when a patient reports unexplained weight gain or loss, persistent fatigue, hair thinning or diffuse hair loss, cold or heat intolerance, constipation or frequent loose stools, low mood or anxiety, palpitations, and irregular or heavy menstrual periods. In Chennai, residents of OMR and Velachery commonly present for this test after noticing these symptoms during a routine or preventive consultation.
How is Selenium performed?
Whether you visit a walk-in lab in OMR or book home collection in Velachery, Chennai, the process is the same. A trained phlebotomist performs a brief, sterile venipuncture, barcodes the sample for tracking, and dispatches it to the NABL lab. Your digital report is available in the GetVisit app the same day for most blood tests.
How accurate is Selenium?
Rare causes of inaccurate results include: very high biotin supplementation (interferes with immunoassays), haemolysed samples from difficult venipuncture, or failure to fast when fasting was required. Following preparation instructions and using a trained phlebotomist minimises these risks.
Are there any risks to Selenium?
This is a low-risk procedure. The only intervention is the blood draw. Side effects are limited to a brief pinch and an occasional small bruise at the puncture site, which resolves in 24 to 48 hours without treatment. Patients on anticoagulants should hold light pressure for 3 to 5 minutes after the draw.
Selenium Test Preparation in Chennai
Fasting and dietary instructions:
No special fasting needed. Avoid heavy fatty meals and alcohol the evening before as a general precaution.
Medication guidance:
If you are on levothyroxine, do not take your morning dose before the blood draw. Collect the sample first, then take your medication , taking it beforehand temporarily elevates free T4 and can produce a misleadingly low TSH.
What to bring:
Carry your doctor's test order, a government-issued photo ID, and your OPD insurance card. If you have had this test before, bring previous reports , your doctor can compare results over time.
Timing:
Morning slots are recommended for most blood tests. Most markers are most stable before meals and activity. GetVisit home collection in Chennai is available from 6:00 AM, including in Virugambakkam and Anna Nagar.
Selenium Test Parameters in Chennai
Single standalone test:
Selenium. Can be ordered individually or as part of a preventive health package on GetVisit.
Why Take a Selenium Test in Chennai ?
When does a doctor order Selenium?
Selenium is ordered when thyroid disease is clinically suspected or when monitoring a patient on levothyroxine therapy. Symptoms often overlap with depression, anaemia, or menopause , making a blood test essential to distinguish thyroid dysfunction from other causes.
Who should get Selenium done in Chennai?
Hypothyroidism is among the most common endocrine diagnoses in Chennai. Fatigue, weight gain, and menstrual changes among professional women across T Nagar, Adyar, and OMR are frequently attributed to stress when the underlying cause is treatable thyroid dysfunction. 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. Those who benefit most from regular Selenium testing include adults above 40, people with sedentary lifestyles or BMI above 25, those managing chronic conditions, smokers, and anyone whose previous result was borderline. Early detection through regular testing in Chennai is consistently more cost-effective than treating advanced disease.
What conditions can Selenium help diagnose?
The conditions diagnosable through Selenium depend on the specific markers the test measures. Results either confirm a suspected diagnosis, support a clinical suspicion requiring further investigation, or effectively exclude the condition the test was screening for.
What do Selenium results mean?
TSH above 4.0 mIU/L with low free T4: hypothyroidism , levothyroxine replacement is started and TSH rechecked every 6–8 weeks until stable. TSH below 0.4 mIU/L with high free T3/T4: hyperthyroidism , requires antibody tests and thyroid scan. Elevated anti-TPO with normal TSH: autoimmune thyroid disease (Hashimoto's) , monitor annually as this often progresses to hypothyroidism over years.
How often should Selenium be repeated?
For preventive screening with a normal baseline: annually for most adults above 35. For monitoring a known condition: at the interval your specialist recommends , typically every 3 to 6 months for active conditions and annually for stable, well-controlled ones.
What happens after Selenium results are ready?
Book a follow-up consultation after reviewing your results. GetVisit stores your reports alongside your previous test history, so your doctor sees your full health trend , not just today's snapshot. This longitudinal context significantly improves the clinical value of each repeat test.
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Vijay Bisht was friendly, helpful, and made our home test process seamless. Grateful for his timely support and follow-up.
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.
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.
“The service was excellent—she was helpful, efficient, and made my recovery smooth and stress-free. Her support made a real difference.”
“Thank you, Shared Gupta, for the great support with my reimbursement claims and Wipro health packages. Truly appreciated!”
Thank you, Rinku. I appreciate your help during my visit. The hospital staff were courteous and professional. Overall, a very good experience!
Vijay Bisht was friendly, helpful, and made our home test process seamless. Grateful for his timely support and follow-up.
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.
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.
“The service was excellent—she was helpful, efficient, and made my recovery smooth and stress-free. Her support made a real difference.”
“Thank you, Shared Gupta, for the great support with my reimbursement claims and Wipro health packages. Truly appreciated!”
Thank you, Rinku. I appreciate your help during my visit. The hospital staff were courteous and professional. Overall, a very good experience!
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.
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.
“I connected with the concierge team today and spoke with Vijay—he was helpful and made a real effort to address my concerns.”
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.
“Grateful to Shikhar for finding a cataract specialist at a convenient time and ensuring a smooth experience. A true asset to the Visit team!”
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.
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.
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.
“I connected with the concierge team today and spoke with Vijay—he was helpful and made a real effort to address my concerns.”
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.
“Grateful to Shikhar for finding a cataract specialist at a convenient time and ensuring a smooth experience. A true asset to the Visit team!”
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.