Blood Test / Am I taking enough T3?: Hello... - Thyroid UK

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Blood Test / Am I taking enough T3?

SassyMH profile image
3 Replies

Hello. Thank you for reading this, and for any help/advice you can offer. I have been taking T3 10mcg with my T4 150/175 mcg alternate days for 3 months now and feel so much better. My Endo and GP both know and support this (but of course wont provide it). In fact at my last 6 monthly check up the Endo said my bloods (T4, hes only just started checking T3) are the best they've been! Now to the questions.

1) Should I up my dose of T3, I feel much better, but its so long since I felt right, Im not sure if I should feel better than I do?

2) I am due a blood test with my GP soon, please could you advice what exactly I should have tested, obviously T3 and T4, but Im guessing, from what Ive read here also, B12, Vitamin D?

I appreciate any advice or opinions. Thank You.

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SlowDragon profile image
SlowDragonAdministrator

Don't change anything until you get tested first

For full Thyroid evaluation you need TSH, FT4 and FT3 tested. Also important to test vitamin D, folate, ferritin and B12

Very unlikely to get FT3 tested by NHS

Recommended on here that all thyroid blood tests should ideally be done as early as possible in morning and before eating or drinking anything other than water . This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip, best not mentioned to GP or phlebotomist)

Last Levothyroxine dose should be 24 hours prior to test, (taking delayed dose immediately after blood draw).

If/when also on T3, make sure to take last dose 8-12 hours prior to test, even if this means adjusting time or splitting of dose day before test

Is this how you do your tests?

Private tests are available. Thousands on here forced to do this as NHS often refuses to test FT3 or antibodies or all 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 special offers, Medichecks usually have offers on Thursdays, Blue Horizon its more random

Come back with new post once you get results

McPammy profile image
McPammy

Best get T4,T3 and TSH bloods checked before you make any changes.

Arpeggio profile image
Arpeggio

You won't get T3 tested by your GP as NHS labs won't do it for GPs, endos can request comprehensive tests though.

I always do a Thriva thyroid panel before each of my appointments, so my endo knows I know what's what and I can ask specific questions related to the results. Sometimes I know the answer already, but I want him to get on board and discuss effectively and get what I need.

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