A Thyroid Function Test (TFT) measures TSH, T3 and T4 together to give a complete picture of thyroid health. It diagnoses and monitors hypothyroidism (underactive) and hyperthyroidism (overactive), and is widely used for fatigue, weight changes, hair fall and during pregnancy or fertility work-ups.
Clinical use cases
Why doctors order it
Comprehensive thyroid evaluation
Hypothyroidism
Hyperthyroidism
Subclinical thyroid dysfunction
Goitre / thyroid nodules
Comprehensive thyroid assessment
About this test
A Thyroid Function Test (TFT) measures TSH, T3 and T4 together to give a complete picture of thyroid health. It diagnoses and monitors hypothyroidism (underactive) and hyperthyroidism (overactive), and is widely used for fatigue, weight changes, hair fall and during pregnancy or fertility work-ups.
Clinical significance
TSH is the most sensitive marker, while T3 and T4 show how much hormone the thyroid is producing. A high TSH with low T4 confirms hypothyroidism; a low TSH with high T3/T4 confirms hyperthyroidism. Measuring all three helps confirm the diagnosis, grade severity and fine-tune thyroid medication.
Get tested if you have these symptoms
Unexplained weight gain or weight loss
Persistent tiredness or low energy
Hair fall, dry skin or feeling cold
Palpitations, anxiety or heat intolerance
Irregular periods or difficulty conceiving
Swelling at the front of the neck (goitre)
What this test detects
Hypothyroidism
Hyperthyroidism
Subclinical thyroid dysfunction
Goitre / thyroid nodules
Included panels
3 analytes · 1 panel
3Thyroid Hormones
Total T3 (Triiodothyronine)
Total T4 (Thyroxine)
TSH (Thyroid Stimulating Hormone)
Normal ranges
TSH: 0.4–4.0 mIU/L
Total
T3: 80–200 ng/dL
Total
T4: 5.0–12.0 µg/dL
Reference ranges vary by lab and patient demographic. Interpret with a clinician.
Sample & preparation
Sample type
Blood (Serum)
Fasting
Not required
Report TAT
Same day / 24 hours
Home collection
Available
How to prepare
1No special preparation
Frequently asked questions
What is the Thyroid Function Test (TFT)?
A Thyroid Function Test (TFT) measures TSH, T3 and T4 together to give a complete picture of thyroid health. It diagnoses and monitors hypothyroidism (underactive) and hyperthyroidism (overactive), and is widely used for fatigue, weight changes, hair fall and during pregnancy or fertility work-ups.
What conditions does the Thyroid Function Test (TFT) detect?
The Thyroid Function Test (TFT) helps detect and monitor conditions including Hypothyroidism, Hyperthyroidism, Subclinical thyroid dysfunction, Goitre / thyroid nodules.
How should I prepare for the Thyroid Function Test (TFT)?
No special preparation
What is the normal range for the Thyroid Function Test (TFT)?
TSH: 0.4–4.0 mIU/L
Total T3: 80–200 ng/dL
Total T4: 5.0–12.0 µg/dL Note: reference ranges may vary by laboratory and should be interpreted by your doctor in the context of your overall health.
How much does the Thyroid Function Test (TFT) cost?
The Thyroid Function Test (TFT) is available at ₹399 (MRP ₹799) on PingMeDoc with free home sample collection. Prices are inclusive of sample collection charges.
Do I need to fast for a thyroid (TFT) test?
No fasting is required. It's best taken in the morning, and if you take thyroid medication, give the sample before your dose for that day.
What is the difference between TSH and a full thyroid profile?
TSH alone is the most sensitive screen. A full TFT adds T3 and T4, which show the actual hormone output — useful to confirm a diagnosis, grade severity or sort out a confusing TSH result.
Does diet affect thyroid test results?
Everyday food doesn't change a single reading much, but high-dose biotin (B7) supplements can distort results, so pause them 2–3 days before. Long-term iodine intake affects thyroid health itself rather than the test.
Does the Thyroid Function Test (TFT) test require fasting?
No fasting is required for the Thyroid Function Test (TFT) test. You can eat and drink normally before sample collection.
How much does the Thyroid Function Test (TFT) test cost at PingMeDoc?
The Thyroid Function Test (TFT) test costs ₹399 at PingMeDoc (MRP ₹799). Free home sample collection is included. NABL-accredited lab processing. Reports delivered digitally in same day / 24 hours.
How long does it take to get Thyroid Function Test (TFT) test results?
Thyroid Function Test (TFT) test results are typically available within same day / 24 hours after sample collection. You can view and download your digital report from your PingMeDoc dashboard.
What type of sample is needed for the Thyroid Function Test (TFT) test?
The Thyroid Function Test (TFT) test requires blood (serum). A trained phlebotomist will collect the sample at your home at your preferred time slot.
Is the Thyroid Function Test (TFT) test NABL accredited?
Yes. All lab tests on PingMeDoc, including the Thyroid Function Test (TFT) test, are processed by NABL-accredited and ISO-certified labs. Reports are reviewed and available on your dashboard.
Is home sample collection free for this test?
Yes. Home sample collection for the Thyroid Function Test (TFT) test is free when booking through PingMeDoc. A phlebotomist visits your home or office at your scheduled time slot.
What conditions does the Thyroid Function Test (TFT) test help screen for?
A Thyroid Function Test (TFT) measures TSH, T3 and T4 together to give a complete picture of thyroid health. It diagnoses and monitors hypothyroidism (underactive) and hyperthyroidism (overactive), and is widely used for fatigue, weight changes, hair fall and during pregnancy or fertility work-ups. It is commonly used for: Hypothyroidism, Hyperthyroidism, Thyroid nodule monitoring, Unexplained weight gain or loss, Fatigue and hair loss assessment.
How should I prepare for the Thyroid Function Test (TFT) test?
No fasting required — can eat and drink normally. Best taken in the morning; if on thyroid medication, give the sample before your daily dose. Stop high-dose biotin supplements 2–3 days before — they can interfere with results.
Test details are for general information only and not a substitute for medical advice. Reference ranges vary between labs. Always discuss results with a registered medical practitioner before starting, stopping or changing any treatment.
₹399₹79950% OFF
Free home collection
What this test measures
3 parameters in the Thyroid Function Test (TFT)
The Thyroid Function Test (TFT) reports the following parameters. Reference ranges are typical adult values from NABL-accredited partner labs and may vary slightly by lab, age and sex — always read results with your doctor.
A Thyroid Function Test (TFT) measures TSH, T3 and T4 together to give a complete picture of thyroid health. It diagnoses and monitors hypothyroidism (underactive) and hyperthyroidism (overactive), and is widely used for fatigue, weight changes, hair fall and during pregnancy or fertility work-ups.
What conditions does the Thyroid Function Test (TFT) detect?
The Thyroid Function Test (TFT) helps detect and monitor conditions including Hypothyroidism, Hyperthyroidism, Subclinical thyroid dysfunction, Goitre / thyroid nodules.
How should I prepare for the Thyroid Function Test (TFT)?
No special preparation
What is the normal range for the Thyroid Function Test (TFT)?
TSH: 0.4–4.0 mIU/L
Total T3: 80–200 ng/dL
Total T4: 5.0–12.0 µg/dL Note: reference ranges may vary by laboratory and should be interpreted by your doctor in the context of your overall health.
How much does the Thyroid Function Test (TFT) cost?
The Thyroid Function Test (TFT) is available at Rs 399 (MRP Rs 799) on PingMeDoc with free home sample collection across India. Prices are inclusive of sample collection charges.
