Lab test · Immunology
T4 - Total (Serum)
The T4 Total test measures total thyroxine levels in the blood to evaluate thyroid function.The T4 Total test measures total thyroxine levels in the blood to evaluate thyroid function.
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NABL-certified lab
Free home collection Report in 24 hrs
ReportWithin 24 hrs
SampleBlood
CollectionHome or centre
FastingNot needed
How it works
1
Book in a minute
Add to cart, pick a date and time slot, pay online or at collection.
2
Sample collected at home or centre
A trained phlebotomist arrives in your slot with sealed, single-use kits.
3
Report on WhatsApp
Within 24 hours on WhatsApp and under My Orders.
Preparation
No special preparation needed unless your doctor advises otherwise.
About this test
The T4 Total test measures total thyroxine levels in the blood to evaluate thyroid function.
The T4 – Total (Serum) test is a blood test used to measure the total amount of thyroxine (T4), a major hormone produced by the thyroid gland that regulates metabolism, growth, and energy levels.
T4 circulates in both bound and free forms, and this test measures the combined total. Abnormal T4 levels may indicate thyroid disorders such as hyperthyroidism (elevated T4) or hypothyroidism (low T4).
This test is often performed along with T3 and TSH tests to provide a comprehensive assessment of thyroid function and help diagnose and monitor thyroid conditions.
The purpose of this test is to
- To measure total T4 hormone levels
- To assess thyroid function
- To help diagnose thyroid disorders
- To monitor the treatment of thyroid conditions
- To support endocrine evaluation
What patients say about Prima
RK5.0
Ramesh K.
Verified · 2 weeks ago
Quick appointment and the staff explained everything. Report came the same evening on WhatsApp.
Booked: MRI Brain
SP4.5
Sneha P.
Verified · 1 month ago
Booking on the app was simple and pricing was clear with no hidden charges.
Booked: Full Body Checkup
AM5.0
Anita M.
Verified · 1 week ago
Home collection was right on time and completely painless. Very professional.
Booked: Thyroid Profile
VS5.0
Vikram S.
Verified · 3 days ago
Great value and fast report. Booked at 9am and had results by evening.
Booked: CBC
Questions people ask
How soon will I get my report?
Your report is delivered within 24 hours of sample collection — on WhatsApp and under My Orders.
Is home sample collection available?
Yes. A trained phlebotomist visits your home with sealed, single-use kits. Home collection is free.
Do I need to fast or prepare?
No fasting is required for this test unless your doctor advises otherwise.
How do I pay?
Pay online (UPI / cards) or pay at collection or at the centre. The price you see is what you pay — it includes the report, with no hidden charges.
Is the lab accredited?
Yes. Prima Diagnostics runs NABL-certified labs with strict quality control across 7 centres in Bengaluru.
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