Blood tests - what time?

[Trelissa]

Hi, I have always had my blood tests done by 08.30 in the past. The hospital is moving to a booking system that tends to give .uch later in the day. Is it important to have your bloods done early?

[debsmitch60]

I have always been told to fast and before 9am. On the swift system you should be able to book somewhere else like a chemist. Hope you get it sorted out 😊

[greygoose]

It's very important if you have a doctor that doses by the TSH, because that is highest early morning. After 9 am the level drops sharply until midday, when it is at its lowest. But either doctors don't understand that or they don't want to - there's nothing a doctor loves more than reducing your dose!

[Anthea55]

Previous post showing the daily rhythms of thyroid hormones. The top graph is for TSH which is what your doctor will be looking at. If you test at a different time the readings won't be comparable and you may have your dose adjusted when it should not be changed.

healthunlocked.com/thyroidu...

[Lalatoot]

I always have mine done around 2pm. This time suits me dosing routine leaving adequate gaps between doses and test. I do not need to worry about tsh as that result is not relevant for me or my doctor. Also my surgery never gives early morning blood tests to thyroid patients.