Bloods should be retested 6-8 weeks after each dose change or brand change in levothyroxine or T3
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 .
Last dose of Levothyroxine 24 hours prior to blood test. (taking delayed dose immediately after blood draw).
This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip)
If/when also on T3, make sure to take last third or quarter of daily 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?
Ferritin is very low
Iron also very low
Important to regularly retest vitamin D, folate and B12
What vitamin supplements are you currently taking
Are you on strictly gluten free diet or dairy/lactose free diet?
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