I know this is a difficult question to answer, but roughly how much higher are ft3 levels throughout the day, compared to when i have my blood drawn at 7am before taking t3. Here's my latest results on 25mcg T3 daily at 7am. Bloods taken before T3 dose.
Tsh - 0.74 (0.27-4.2)
FT4 - 10 (12-22)
FT3 - 3.95 (3.1-6.8)
I know it is advised to split the t3 dose the day of the test, but this didn't happen unfortunately, and some say its best taken all at once.
I wanted to ask if anyone has has results from before taking t3, then again later in the day and the difference it shows?
I suppose it would make more sense to have blood taken during the day, and that would be a more accurate representation of my levels?
TIA
Written by
Grundywhiffs01
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"I know it is advised to split the t3 dose the day of the test"
I think you've confused some advice given here - it is generally recommended here that T4 is not taken during the 24 hrs preceding the blood draw, and that T3 is not taken in the preceding 8 - 12hrs. If your normal dosing time for T3 fits with that, no adjustment is required; but if it doesn't fit with that timescale, it's suggested that you adjust the timing on the day before the day of the blood draw, and if you feel that wouldn't be comfortable, you could split the dose to take half at the normal time and half later so long as it fits the 8 - 12hr requirement. So if say, you normally took your T3 at 11.00 pm, and your blood draw was at 9 am, no adjustment would be required. And in any event, no further adjustment is needed on the day of the test itself.
I have never split T3 or any other thyroid hormones. I take 25mcg once daily when I get up with one full glass of water.
I only get a blood test yearly as I am stable with no symptoms.
Your TSH will be low because you take T3 and so will T4 as you take none. It is all about how the person feels on a particular dose of thyroid hormones that is the best judge if you're on sufficient.
This doctor/researcher/Adviser to TUK (deceased) always took his T3 in the middle of the night so that nothing interfered. He had thyroid hormone resistance and had to take a large dose to relieve his symptoms. He was also an expert in the use of T3.
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