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Total Thyroxine (T4) Test

A Thyroxine test Measures the Level of Thyroxine (T4) in your blood too little or too much T4 can indicate Thyroid Disease.

Total Thyroxine (t4) Test Info & Procedure

Group NameTHYROID INFERTILITY
FastingFasting not required
Sample TypeSERUM
Sample CollectionHome sample collection
ReportsMost reports: 24–48 hours after the sample reaches the lab; timing varies by test.
Report typeDigital report

Total Thyroxine (t4) Test Visual Guide

Measures total thyroxine hormone level for thyroid function assessment.

Technician collecting a blood sample from a woman at home

Download Total Thyroxine (t4) Test Visual Guide infographic (PNG)

ResultReported in ug/dL.
What it showsCurrent thyroid hormone level.
SampleSerum. No fasting required.
Common useThyroid function review.

How Total T4 Works

  1. Thyroid makes T4Main circulating hormone
  2. Total level checkedBound plus free hormone
  3. TSH pattern reviewedTSH guides interpretation

Typical result context

Result contextGuide
Typical adultlab specific
Lowhypothyroid context
Highhyperthyroid context

Total T4 is affected by binding proteins; FT4 is often more direct.

Why it may be advised

  • Thyroid function check
  • Medication follow-up
  • Pregnancy thyroid context

When to discuss it

  • Fatigue/weight change
  • Palpitations
  • Known thyroid disease

Often reviewed with

  • TSH
  • Free T4
  • Total T3

Simple Testing Flow

  1. BookSelect Total T4 test online
  2. Home VisitCollection executive arrives
  3. SampleSample collected as instructed
  4. Lab ReportProcessed and shared digitally

No fasting

  • Usually no fasting
  • Share thyroid medicine timing

May affect result

  • Pregnancy
  • Binding protein changes
  • Thyroid medicines

Total hormone

  • Includes bound hormone
  • FT4 may add clarity

About the Test

Total Thyroxine (t4) is a laboratory test that measures a result in a Blood (Serum) sample. It may be ordered to investigate symptoms, support a diagnosis or monitor a condition, depending on your clinician's advice.

The current booking price is shown at Rs. 192 against an MRP of Rs. 240, inclusive of taxes where applicable.

No fasting is required for this test alone. If another test in the same order requires fasting, follow its preparation instructions. Home sample collection is available in serviceable cities. A trained phlebotomist collects the sample using sterile equipment, and the report is shared online after processing.

Total Thyroxine (t4) blood test sample collection

Total Thyroxine (t4) Sample Report Format & Ranges

Relevant details from a Thyrocare sample report are shown below. A standalone PDF preview for Total Thyroxine (t4) is not available here. Reference intervals may vary by method and patient factors. Use the interval printed on your own final report.

Conducted at Thyrocare Labs
Lab Accreditation CAP, NABL, UKAS, ANAB

Total Thyroxine (t4) Thyrocare Sample-Report Range Table

Parameter Unit Reference Range
TOTAL THYROXINE (T4) µg/dL 4.87-11.72

Total Thyroxine (T4) Reference Guide

Educational guide only. The Thyrocare sample-report range is shown in the Reports & Ranges section. For your own result, use the range on your final report and discuss it with your clinician.

Why This Test Is Ordered

ReasonDescription
Thyroid hormone reviewMeasures free plus protein-bound T4.
TSH follow-upHelps evaluate thyroid function patterns.
Pregnancy/medicine contextUseful where binding proteins may change.

Symptoms And Who Should Test

SituationDescription
High thyroid symptomsFast heartbeat, weight loss, heat intolerance, tremor.
Low thyroid symptomsFatigue, weight gain, cold intolerance, constipation.
Follow-up usersPeople with known thyroid disease or abnormal TSH.

Preparation And Interpretation Notes

TopicGuidance
FastingNo fasting is required for this test alone. If another test in the same order requires fasting, follow its preparation instructions.
MedicinesHormones, thyroid medicines and supplements can affect results.
InterpretationRead with TSH and FT4 when available.
Sources: MedlinePlus Thyroxine T4 Test

Home sample collection for Total Thyroxine (t4) is available in the cities below, subject to confirmation of your pincode at booking.

Bangalore Chennai Delhi Hyderabad Kolkata Mumbai Pune Ahmedabad Jaipur Lucknow Coimbatore Chandigarh Agartala Agra Ahmednagar Ajmer Akola Aligarh Allahabad Alwar Ambala Amravati Amritsar Anand Araria Aurangabad Bahraich Ballia Banda Bardhaman Bareilly Basti Beed Begusarai Bhagalpur Bhilwara Bhiwani Bhopal Bhubaneswar Bidar Bikaner Birbhum Bulandshahr Cachar Chandrapur Chittoor Cuttack Dakshina Kannada Darbhanga Darjeeling Datia Dehradun Deoghar Deoria Dewas Dhanbad Dharmapuri Dhule Durg East Champaran East Godavari East Singhbhum Erode Etah Faizabad Faridabad Gandhinagar Ganjam Gaya Ghaziabad Ghazipur Godda Gonda Gorakhpur Guntur Gurdaspur Gurgaon Guwahati Gwalior Haridwar Hathras Hazaribagh Hisar Hooghly Hoshangabad Howrah Indore Jabalpur Jajpur Jalandhar Jalgaon Jalna Jammu Jamnagar Jamshedpur Jamui Jaunpur Jhajjar Jhansi Jharsuguda Jodhpur Kadapa Kalaburagi Kamrup Kanchipuram Kanpur Kanyakumari Karimnagar Karnal Katihar Katni Kendujhar Khammam Kheda Kishanganj Kochi Koderma Kolhapur Koraput Kota Kozhikode Krishna Krishnagiri Kurnool Latur Ludhiana Madhubani Madurai Mandla Mangalore Mathura Mayurbhanj Medak Medinipur Meerut Mohali Moradabad Munger Muzaffarnagar Muzaffarpur Mysore Nagpur Nainital Nalanda Nalgonda Namakkal Nanded Narsinghpur Nashik Navi Mumbai Nellore Nizamabad Noida North 24 Parganas North Dinajpur Palghar Panchkula Panipat Patiala Patna Pedakurapadu Peddapalli Pondicherry Prakasam Pratapgarh Puri Purnia Raebareli Raigarh Raipur Raisen Rajahmundry Rajkot Rajnandgaon Ranchi Rangareddy Ratlam Ratnagiri Rewa Rohtak Sagar Saharanpur Saharsa Sahibzada Ajit Singh Nagar Salem Sambalpur Sangareddy Saran Satara Secunderabad Seraikelakharsawan Sibsagar Siddipet Sitamarhi Solapur Sonbhadra South 24 Parganas Srinagar Sultanpur Sundargarh Surat Surguja Thane Thanjavur Thiruvananthapuram
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Profiles Including This Test

Total Thyroxine (t4) Test Price

Test conducted by Thyrocare partner laboratory Thyrocare Technologies Limited
Thyrocare partner laboratory
Rs. 240
Rs.192 20% Off
Free Home Sample Collection
Pay after sample collection
CAP Accredited NABL Accredited UKAS Management Systems ANAB Accredited

Why Choose Thyrocare for Total Thyroxine (t4)

Review the preparation guidance, sample type, home collection availability and report information before booking Total Thyroxine (t4). The final collection and reporting details are confirmed during booking.
Home sample collection for diagnostic testing

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Laboratory Processing

Your sample is collected by a trained phlebotomist and sent to the partner laboratory for analysis. The laboratory processes the sample using its validated procedures and quality controls. Your final report shows the result, unit and reference range used for that test. Discuss an unexpected or abnormal result with your clinician.