When to have blood tests : Hi, I have been on... - Thyroid UK

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When to have blood tests

Clara9 profile image
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Hi,

I have been on 112,5 t4 and 12,5 t3 for 4 weeks. This is except 4 days 2 weeks ago when I only took 6.25 T3 along with my 112,5 t4. I increased the dose back up after 4 days since it was too little for me. Do I need to start counting from the beginning after these days or can I count from when I started 112,5+12,5? That is have blood tests done 6 weeks after I first started this dose and don't care about those few days with a lower dose of t3?

Any advice would be highly appreciated.

Thanks!

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Clara9
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Clutter profile image
Clutter

Clara9,

You can test 6-8 weeks after first starting T3. Make sure you leave 8-12 hours between last T3 dose and blood draw.

Clara9 profile image
Clara9 in reply to Clutter

Thank you! That's great news, then I don't have to wait 3 more weeks. 😀

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