What is Free Thyroxine (T4) Test

Thyroid, the butterfly-shaped gland at the base of your throat, plays a crucial role in the way your body utilises energy, growth and metabolism. It produces hormones, known as thyroxine, that are known to affect your body weight, temperature, muscle strength, your mood and cardiovascular functionalities, etc.

Thyroxine or T4 hormones are categorised as free T4 (the active form of Thyroxine) and bound T4 (gets attached to a protein that prevents it from entering your tissues).

A FT4 test or free thyroxine T4 test helps your healthcare provider in gauging your FT4 levels against the normal range, which could be a sign of thyroid disorders. A FT4 blood test is believed to yield precise results majorly in comparison to a total T4 test and thus are mostly recommended to analyse thyroid disorder-related symptoms.

About FT4 Blood Test

Learn everything about FT4 Blood Testing before you book lab test online. Understand the why, how, and what of this test.

Why Do I Need FT4 Test?

A FT4 test is usually recommended to analyse your thyroid health profile and assess your potential risks of developing the same.

Your healthcare provider will recommend a free t4 blood test

To diagnose and monitor hypothyroidism, hyperthyroidism and pituitary gland disorders
To assess your thyroid health profile, especially when your TSH test results yield abnormal readings
If you have a family history of thyroid disorders
If you are exhibiting signs of hypothyroidism, such as weight gain, fatigue, dry skin, thinning hair, sensitivity to cold temperatures, slow heart rate and depression
If you are exhibiting symptoms of hyperthyroidism, such as anxiety, weight loss, muscle weakness, sensitivity to high temperature, arrhythmia, enlarged thyroid gland, frequent bowel movement, changes in menstrual patterns, trouble sleeping and fatigue, etc.
To monitor FT4 levels if you are undergoing a thyroid hormone replacement therapy
To screen for an underactive thyroid gland in newborns as it may lead to critical complications

How To Prepare For FT4 Test?

To Prepare for an FT4 Blood Test, Follow These Essential Steps: Consult Your Healthcare Provider, Discuss Medications, Minimize Intense Exercise, Adhere to Fasting Instructions (if provided), and Provide a Complete Medical History.

Finding FT4 Blood Test

Should you book blood test online to check your free thyroxine FT4 levels or go to the nearest clinic and get it done by a medical professional? Let's Find Out

Can I Take FT4 Test At Home?

Yes, the FT4 level Testing can be taken at home. HealthcareOnTime’s at-home lab testing service in association with Thyrocare, provides a convenient and efficient way to get important medical tests done from the comfort of your place, without the need for a doctor's visit or a trip to a lab. It is always preferable to consult with a healthcare provider about any concerns regarding your test results.

How Much Does FT4 Test Cost?

Are you curious about the FT4 Test price? At HealthcareOnTime, we believe in providing cost-effective solutions to keep you informed about your thyroid function.

The FT4 Blood Test price may vary depending on several factors, including your location, the healthcare provider, and your insurance coverage. However, we're pleased to offer this vital test at an affordable rate of just INR 250! Our prices not only compete in the market but also maintain the highest quality standards.

In India, the cost of an FT4 Blood Test typically starts from INR 300, but prices may vary based on the specific laboratory and city. Monitoring your thyroid function is essential for overall health and well-being.

But here's the exciting part – HealthcareOnTime is committed to making healthcare accessible to all. We provide valuable services, including affordable FT4 Blood Testing, in over 4500+ pincodes nationwide.

Test Result Interpretation

You've received your FT4 Blood Test results, but you may still need assistance determining if they fall within the normal range. Continue reading this section to gain clarity on whether your FT4 results are within the expected range or not.

What Does FT4 Test Results Mean?

Anything beyond normal FT4 levels may mean underlying thyroid conditions. However, these tests are not conclusive. Your healthcare provider will look at T3 and TSH hormone test results to make accurate and on-time diagnosis.

What is the FT4 Normal Range?

The normal free T4 range may vary based on the age, gender and overall health profile.

Particulars	FT4 Normal Range
Newborns and toddlers up to 5 years of age	0.8 - 2.8 ng/dL
Children aged 6 - 15 years	0.8 - 2.1 ng/dL
Male adults (16 - 17 years of age)	0.8 - 2.8 ng/dL
Female adults (16 - 17 years of age)	0.8 - 1.5 ng/dL
Adults above 18 years	0.9 - 1.7 ng/dL

FT4 test results that reveal a reading beyond these free thyroxine FT4 normal ranges require immediate medical consultation.

What Conditions Can Cause High FT4 Levels?

Higher than normal FT4 levels may be caused due to

Hyperthyroidism (which may be caused due to Graves disease)
Thyroiditis (referred to as the enlargement of the Thyroid gland)
Enlarged thyroid gland that makes excessive thyroid hormones
Toxic thyroid nodules
Too much iodine in the diet
Non-cancerous tumours in the pituitary gland
Pregnancy (it may lead to temporary rise in T4 hormone levels)
Oestrogen-containing birth control pills

You may have symptoms, such as unexplained weight loss, increased bowel movements, and rapid heartbeat, etc.

What Conditions Can Cause Low FT4 Levels?

Lower than normal FT4 levels may be caused due to

Hypothyroidism (caused due to Hashimoto disease)
Thyroiditis
Side effects from certain medications
Congenital hypothyroidism (a thyroid disorder that affects newborns from birth)

Symptoms of low FT4 levels may include excessive fatigue, intolerance to cold temperatures, lower than normal heart rate and weight gain among others. Since free thyroxine FT4 hormone levels impact your body’s metabolism, growth and overall functioning, you should consult with your healthcare provider if you are experiencing above symptoms constantly.

Why Choose HealthcareOnTime?

Convenience at Your Doorstep

Ever wished for healthcare that comes to you? HealthcareOnTime makes it a reality with doorstep lab testing, cutting out clinic hassles. No more queues or travel stress. Experience at-home sample collection, prioritizing health without time constraints. —your path to health, now just a doorstep away!

Affordable Testing with Thyrocare Partnership

Experience cost-effective lab testing at-home with HealthcareOnTime's exclusive partnership with Thyrocare. Benefit from competitive prices while ensuring precise results. Our collaboration with Thyrocare Technologies Limited guarantees affordability without compromising on the accuracy and reliability of your lab test.

Comprehensive Health Screening

At HealthcareOnTime, we've got your back with our comprehensive health checkup packages! Take charge of your well-being by booking online. These packages empower you to stay ahead, catching potential issues early for timely management. It's like having a health ally, and making informed decisions for a healthier, happier life.

Disclaimer: Although we have endeavoured to provide accurate information on this page, we strongly recommend that you seek advice from your doctor before relying on any of the test ranges or lab-test recommendations mentioned herein.

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