Optimum Time and Conditions for Thyroid Blood T... - Thyroid UK

Thyroid UK

140,281 members164,998 posts

Optimum Time and Conditions for Thyroid Blood Tests

Clutter profile image
1 Reply

Article discusses how fasting and time of day of testing can alter TSH results.

...The Thyroid Manager online textbook mentions that Serum T4 concentrations peak 2 to 4 hours after an oral dose and remain above normal for approximately 6 hours in patients receiving daily replacement therapy.

For this reason, thyroid expert Richard Shames, MD has the following recommendation:

I absolutely recommend that patients have any morning blood tests evaluating the thyroid before taking any thyroid medication. I have always told my patients to do it this way.

thyroid.about.com/od/gettes...

Written by
Clutter profile image
Clutter
To view profiles and participate in discussions please or .
Read more about...
1 Reply
LouiseRoberts profile image
LouiseRoberts

Thank you for posting.

Sorry you had no replies.

L

X

Not what you're looking for?

You may also like...

Ideal Private Blood Tests for Thyroid.

Dear Thyroid UK Users, I need your help in compiling a list of Thyroid Blood Tests that you would...

Thyroid blood tests

I finally convinced my GP to send me for a full set of thyroid bloods tests (after 20 years and 8...

Preparing for thyroid tests

Hello. I am going to have my full thyroid test done next week. I understand that I need to be...

Thyroid blood tests

Can any moderator please type up what the 'normal' ranges are for all types of blood tests relating...

Supplements for thyroid conditions

Hi I'm a newbie. I've been taken thyroxine for the past 14 years. I started on 50 mcgs initially...