What happens to your body when your TSH levels are in range and free T4 is a little high?

[Vanessa09]

To be precise, levels are TSH 0.79 (lower end of reference range) and free T4 27.9 (reference range 12-22)

There is so much i have to learn!!

Thankyou for any advise xx

[SeasideSusie Remembering]

Vanessa09

That would tell me that FT3 needs testing to see if T4 is being converted to T3 well enough.

And if thyroid antibodies haven't been tested, I'd get those done too - Thyroid Peroxidase (TPO) and Thyroglobulin (TG).

[SlowDragon Administrator]

Also you need vitamin D, folate, ferritin and B12 tested

For full Thyroid evaluation you need TSH, FT4, FT3 plus TPO and TG thyroid antibodies and also very important to test vitamin D, folate, ferritin and B12

Private tests are available. Thousands on here forced to do this as NHS often refuses to test FT3 or antibodies or vitamins

thyroiduk.org.uk/tuk/testin...

Medichecks Thyroid plus ultra vitamin or Blue Horizon Thyroid plus eleven are the most popular choice. DIY finger prick test or option to pay extra for private blood draw. Both companies often have money off offers.

All thyroid tests should ideally be done as early as possible in morning and fasting. When on Levothyroxine, don't take in the 24 hours prior to test, delay and take straight after test. This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip, GP will be unaware)

Is this for your daughter? Private tests are difficult for a minor

[Vanessa09 in reply to SlowDragon]

Thankyou, no, these are her results from bloods taken a couple of weeks ago. The home test is for my husband, he suffers with CFS/ME.

[MiniMum97]

Have a look at this link. Fourth bullet down under “hyperthyroidism”

pathology.leedsth.nhs.uk/pa...

TSH can be slow to respond to raised or lowered levels of T3 and T4 which may be why it’s low but not under range yet.

More testing needed.

[Vanessa09 in reply to MiniMum97]

She's dropped down 25mg so is now on 125mg daily and will be tested in 4-6 weeks