Blood tests

[Jefner]

I take my 100 levo and 10 t3 at bedtime around 1am most nights.

When i do my next bloods should I miss a night's dose completely or take after I have done my test in the morning?

Will it then be ok to take my usual dose the same evening or will i be double dosing?

[SeasideSusie Remembering]

Jefner Definitely do not take the Levo the night before, there should be 24 hours between last dose of Levo and blood draw and if you were to take it then it would only be 8 or so hours assuming your blood draw is around 9am.

From what I understand, T3 peaks about 4-6 hours after taking it so you should probably still take your T3 the night before. If you leave it off then your T3 result will be totally skewed.

Take the missing dose of Levo after the blood draw, then both Levo again and T3 when you go to bed as normal that night.

[Jefner in reply to SeasideSusie]

Wont taking my t3 skew my results?

[SeasideSusie Remembering in reply to Jefner]

Jefner Are you taking T3 without your GP's knowledge?

Is this a GP test or a Blue Horizon test purely for your own use?

Taking T3 will skew results to some extent anyway. T3 suppresses TSH and lowers FT4.

[Jefner in reply to SeasideSusie]

Gp prescribed 20mcg but i told him i was gonna start at 5mcg which i took for 11 dys then added another 5mcg last weekend.

I copy my gp in on all tests i have done privately

[SeasideSusie Remembering in reply to Jefner]

Jefner OK, so your GP will want to monitor what effect the T3 is having.

If you don't take your T3 at bedtime, then the time between your last dose of Levo and T3 is going to be something like 32 hours (assuming meds taken at 1am the previous night and blood draw at 9am).

That time frame is OK for your Levo, but T3 has a short half life (about two and a half days compared to seven days for Levo), and a dose of T3 is about 95% absorbed in four hours, as I said, it peaks 4-6 hours after taking it.

If you leave your T3 off for 32 hours your GP wont get a proper picture of what effect T3 is having, your T3 result will be pretty useless.

My opinion is to do as I said, leave off the Levo at bedtime the night before the blood draw but take the T3. Assuming you take it at 1am, it will have peaked by 7am at the latest and the level will be dropping off by your morning blood draw. That way your GP gets a proper picture of what effect T3 is having if he knows anything about how T3 works.

[Jefner in reply to SeasideSusie]

Good idea, i will probably take it earlier tonight cus i snack late cus of my cortisol levels and not feeling able to eat properly until the evenings whdn symptoms subside. Then i have to wait 2 hrs cus of my levo. Actually it wont hurt to miss a dose of levo anyway, dont need cus of high rt3