FREE THYROXINE-FREE T4

Lab Test
522.505505% off
1K+ people booked this test
🎖️

SENIOR

FLAT 10% OFF FOR SENIOR CITIZENS

👪

FAMILY

ADD A FAMILY MEMBER FOR 20% DISCOUNT

Lab Test

Certified Labs

NABH Accredited

60 mins collection

Not specified

Reports in

3 hrs

Measures

Amount of free thyroxine (T4) in the blood

Identifies

The Thyroid Function and disorders

60
Mins Home Collection
1M
Happy Customers
4.9
Google Rating
5
Certified Labs

About The Test

What Is the Free T4 Test and Why Is It Important?

The Free T4 test is one of the laboratory tests which determine the amount of free thyroxine (T4) that is circulating in the blood. T4 is one of the hormones that is produced and secreted by the thyroid tissue which is gland shaped like a butterfly in the neck region. The thyroid glands have a crucial role in body metabolism as well as in the growth and development of the body. For this purpose, Free T4 test is used in evaluating thyroid function and diagnosing potential thyroid ailments. 

This test applies a laboratory method known as immunoassay, which determines the quantity of free T4 found in a person’s blood. The test is as uncomplicated as it is promising, pain-free, and commonplace. 

What Exactly is Measured by the Free T4 Test?

A Free T4 test measures the amount of thyroxine (T4) that’s not bound to proteins in the bloodstream. Free T4 is a form of T4 that is bioactive. The test result is given in concentration of free T4, for example, a level of free T4 is measured in pg/dL. 

When is the Free T4 test performed?

Generally, Free T4 tests are performed: 

  • To check on the functioning of the thyroid gland for hyperthyroid (highly active thyroid) or hypothyroid (less active thyroid) symptoms. 
  • For regular checks for individuals with a history of thyroid disorders or thyroid cancer. 
  • To screen and detect any possible thyroid diseases like Graves’ disease or Hashimoto’s thyroiditis. 
  • After thyroid hormone replacement therapy to check if treatment was effective. 


Does The Free T4 Test carry risks or lacks accuracy in some aspects?

Risks: 

  • Pain, bleeding and bruising at the needle site while blood is drawn. 
  • There is a chance of infection occurring at the site where the needle was inserted. 

Limitations: 

  • The test might fail to accurately identify the presence of a thyroid disease for a person suffering from liver or kidney ailments. 
  • Results may also not be accurate for patients using specific drugs such corticosteroids or phenytoin. 
  • Patients with thyroid nodules or cancer might also find the test inappropriate. 

List of Parameters

What Are the Components in the Free T4 Test?

The Free T4 test involves evaluating the following parameters: 

  • Free T4 Level (pg/dl) 
  • Optional: Thyroid Stimulating Hormone (TSH) Level 
  • Optional: Thyroid Hormone Levels 

Why This Test

Who is the Target Population for the Free T4 Test?

Some of the people who may benefit from the Free T4 test include: 

  • People who have symptoms of hyperthyroidism or hypothyroidism, which might show up as weight changes, fatigue, or even mood fluctuations 
  • People who have a history of thyroid disorders or even thyroid cancer 
  • People having a genetic predisposition to thyroid disorders 
  • People who are on medication that need them to take thyroid hormone replacement therapy 


Benefits

Positive Outcomes of the Free T4 Test on Your Health.

  • To identify cases of abnormal clinical function of the thyroid gland like hyperthyroidism or hypothyroidism 
  • To follow the activity of the gland as well as revise treatment protocols 
  • To check the effectiveness of the medication administered in patients receiving thyroid hormone replacement therapy 
  • To screen a population for individuals who may suffer from these disorders in the future. 


Which Diseases May Be Detected Using the Free T4 Test?

Those diagnosed with the following conditions can benefit from using the Free T4 test: 

  • An overactive thyroid gland is termed Hyperthyroidism 
  • An underactive thyroid gland is termed Hypothyroidism 
  • Graves' disease 
  • Hashimoto's thyroiditis 
  • Thyroid nodules or even thyroid cancer. 

Test Preparation

Steps To Follow Before You Take the Free T4 Test

Fasting: Not required 

Prerequisites: None 

Eligibility: All ages are eligible 

Test Procedure: A venipuncture blood draw will be performed. 

Caution before taking the test: Notify your healthcare professional if you are on medication and have any medical issues. 

Test Results

Free T4 Test Results Analysis

Condition/Findings Description Interpretation
High Free T4 Level Elevated free T4 levels may indicate hyperthyroidism or thyroid hormone replacement therapy overdose Hyperthyroidism, thyroid hormone replacement therapy overdose
Low Free T4 Level Decreased free T4 levels may indicate hypothyroidism or thyroid hormone replacement therapy underdose Hypothyroidism, thyroid hormone replacement therapy underdose
Normal Free T4 Level Normal free T4 levels indicate normal thyroid function Euthyroidism (normal thyroid function)

FAQs

What do you intend to achieve using the Free T4 test?

The Free T4 test assesses thyroid function and aids in diagnosis of thyroid related disorders. 

What is the average time it takes to complete the test?

Usually, the test can be performed within a few minutes. 

Is there any possible danger that comes with taking this test?

Like any other test, there are risks involved in this test as well. Some of the risks include a blood draw, infection at the injection site, and coughing. 

How would you rate the test in terms of accuracy and reliability?

While the tests are fairly reliable, people suffering from liver or kidney issues or taking specific medications might not receive the same results. 

What do you consider to be the normal range values for the Free T4 test?

The normal values for the Free T4 test differ by test measuring and the T4 level but imports range between 0.8 to 1.8 pg/dL. 

Loading...

© 2023 Cadabam's Diagnostics Labs. All rights reserved.

+91 80503 81444
+91 99001 26611