Normal result?

[Button11]

Hi,

My tsh in March was 3.74 then in June 1.36 both are in range but is it normal for it to rise and fall as mine seems to have over the years but has always been in range.

Thanks in advance

[coppeen]

Yes, after 20 years on thyroxine a Gp finally told me that levels can fluctuate all the time and are affected by things like illness, viruses etc, or having a very stressful time or doing too much - makes sense as your body cannot make more when needed if like me your thyroid has been removed. It only became apparent as I had to have several tests before I could have a knee op, and the levels had gone wrong each winter after tests were taken when I was just developing a sore throat & cough - but went back to normal in the summer without altering the dose!

I am amazed how few health professionals seem aware of this, but have now had it confirmed by other sources.

[Button11 in reply to coppeen]

coppeen oh ok thank you, is this the same if your not on medication?

So it's just a normal thyroid function doesn't mean there is anything wrong with the thyroid?

[greygoose]

Were both tests done under the same circumstances? Time of day? Fasting? TSH is highest early in the morning, and decreases throughout the day. It also decreases after eating.

[Button11 in reply to greygoose]

greygoose Ah ok. the higher one was fasting and around 9am the. Lower was around 11 and I'd eaten

[greygoose in reply to Button11]

That explains it, then. Always get the earliest appointment possible, and fast over-night.