I have just had my first follow up blood tests after being on Levothyroxine for 6 weeks. I was feeling better initially but the positive effects have worn off, back to falling asleep at 9pm and shockingly tired
Recommended on here that all thyroid blood tests should ideally be done as early as possible in morning and fasting. Last Levothyroxine dose should be 24 hours prior to test, (taking delayed dose immediately after blood draw). This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip, best not mentioned to GP or phlebotomist)
Is this how you did this test?
Your FT4 is now very high. Too high. This may be because you took Levothyroxine before the test?
Yet your TSH remains high, too high
So you look like you have a conversion problem
Your GP should be testing FT3 as well as FT4. But they are unlikely to agree or lab may refuse to test FT3
Also essential to test vitamin D, folate, ferritin and B12
Ask GP to test these too
Antibodies are only just below range, suggests this may be autoimmune thyroid disease. High FT4 could be temporary due to Hashimoto's flare
You need TG antibodies tested as well ideally, but NHS refuses to test TG antibodies unless TPO are above range
Private tests are available. Thousands on here forced to do this as NHS often refuses to test FT3 or antibodies or all vitamins
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
What brand of Levothyroxine are you currently taking?
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