Blood test on NDT

[AiryFairie]

So I am taking 65mg (1 grain) of Nature-Throid each morning. I am due to have a blood test to check my thyroid function, and was wondering what is the best time of day to have this. If I have the test early in the morning, before taking my NT, it will have been 24 hours since my last dose. Is that too long? I know you should leave 24 hours with Levo, but don't know if the same rule applies with NDT. I am using a private test, Medichecks, so I want to get it right!

[fibrolinda]

Anything witht3 in it, like NDT, it should be 8-12 hours maximum since last dose when you do blood tests. Not sure the best way to juggle it... I take my NDT at bedtime so just take an hour it so earlier the evening before test.

X Linda 🙂

[AiryFairie in reply to fibrolinda]

Thank you fibrolinda

[shaws Administrator]

It is recommended to leave 24 hours between dose and test and take it afertwards (that's if you take a morning dose). If you take an evening dose, miss this and take after test and night dose as usual.

[AiryFairie in reply to shaws]

Thank you for your reply shaws

[Clutter]

AiryFairie,

If you leave 24 hours between last dose and blood draw you can add +20% to your FT3 result to estimate the normal circulating level.

[AiryFairie in reply to Clutter]

Thank you Clutter