I’ve been on 50ug levo since December and my latest results are even lower than on 25ug. How is that possible? I will add the older results in comments for comparison.
Waiting for antibodies test to come back from my GP. Last time he said my TPO were too low to be hashimoto. Sounds like nonsense to me.
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Lenaa
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Were both tests done at the same time of day, fasting and leaving a gap of 24 hours between the last dose of levo and the blood draw?
More than likely that you do have Hashi's, with that result, so that could account for the difference in results. Levels do tend to jump around with Hashi's.
Traditionally we have tended to start patients on a low dose of levothyroxine and titrate it up over a period of months. RCT evidence suggests that for the majority of patients this is not necessary and may waste resources.
For patients aged >60y or with ischaemic heart disease, start levothyroxine at 25–50μg daily and titrate up every 3 to 6 weeks as tolerated.
For ALL other patients start at full replacement dose. For most this will equate to 1.6 μg/kg/day (approximately 100μg for a 60kg woman and 125μg for a 75kg man).
If you are starting treatment for subclinical hypothyroidism, this article advises starting at a dose close to the full treatment dose on the basis that it is difficult to assess symptom response unless a therapeutic dose has been trialled.
A small Dutch double-blind cross-over study (ArchIntMed 2010;170:1996) demonstrated that night time rather than morning dosing improved TSH suppression and free T4 measurements, but made no difference to subjective wellbeing. It is reasonable to take levothyroxine at night rather than in the morning, especially for individuals who do not eat late at night.
Monitoring replacement treatment
If untreated hypothyroidism has been present for a long time, hyperplasia of the TSH-producing cells in the pituitary can result in it taking 3–6 months for the TSH level to return to the reference range, even if full replacement dose levothyroxine is started straight away.
It doesn't (or at least, shouldn't) mean what it says!
Your TSH is NOT normal for your FT4/FT3 numbers.
Only if you simply take any TSH result in the reference range as being "normal" utterly regardless thyroid hormone results and clinical presentation could your combination of results be regarded as normal.
SeasideSusie gave lots of info on Central hypothyroidism
TSH is unreliable at best of times, once on levothyroxine, but with central hypothyroidism it definitely needs ignoring.....dosing should be by Ft4 and Ft3 and also by your weight ....dose slowly increases in 25mcg steps up
Approximate full replacement dose is likely to be 1.6mcg per kilo of your weight ...some People need a bit more...some a bit less
Many people find Levothyroxine brands are not interchangeable.
Once you find a brand that suits you, best to make sure to only get that one at each prescription.
Watch out for brand change when dose is increased or at repeat prescription.
Many patients do NOT get on well with Teva brand of Levothyroxine. Though it is the only one for lactose intolerant patients. Teva is the only brand that makes 75mcg tablet. So if avoiding Teva for 75mcg dose ask for 25mcg to add to 50mcg or just extra 50mcg tablets to cut in half
Yes I know and CH was the initial diagnosis I was fighting with my GP for. But things became complicated once I saw not long ago that my TPO are raised. My GP said this isn't hashi as they are not high enough but to my mind, if one is healthy, they would not have any antibodies and certainly not over the range. So I don't know what is more applicable now central H or Hashi... Still, I cannot understand why my results are worse on 50 than they were on 25. If 25 replaced my own hormones with its dose and now my hormones are replaced with a higher dose, even tho not optimal, I still shouldn't be worse than on 25. This is what's odd to me. A lady above said fluctuations like this can happen in hashi.
Highly unlikely...your Ft4 is extremely low ...so you don’t have hardly any thyroid hormone to make RT3 with
You just need a 25mcg increase in dose of levothyroxine and bloods retest6-8 weeks later
This slow steady increase repeats until Ft4 is in top third of range and Ft3 at least over half way through range
Levothyroxine doesn’t top up your own thyroid output, it replaces it ....that’s why we all eventually need roughly same dose of 1.6mcg per kilo of your weight
It worked. GP went straight from 50 to 100. I’ve actually been taking 75 secretly since those results. I assume it’s safe to just go straight to 100 since I was so low just two weeks ago
Many people find Levothyroxine brands are not interchangeable.
Once you find a brand that suits you, best to make sure to only get that one at each prescription.
Watch out for brand change when dose is increased or at repeat prescription.
Many patients do NOT get on well with Teva brand of Levothyroxine. Though it is the only one for lactose intolerant patients. Teva is the only brand that makes 75mcg tablet. So if avoiding Teva for 75mcg dose ask for 25mcg to add to 50mcg or just extra 50mcg tablets to cut in half
No other medication or supplements at same as Levothyroxine, leave at least 2 hour gap. Some like calcium, magnesium, HRT, omeprazole or vitamin D should be four hours away
(Time gap doesn't apply to Vitamin D mouth spray)
Get bloods retested 6-8 weeks after each dose increase
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, best not mentioned to GP or phlebotomist)
Suggest you retest vitamins too at next blood test if possible
So I’ve been on 75 for three weeks (since 10th March) and on 100 since 19th March. Last few days my hair loss has increased massively, my energy decreased, I feel even colder than before and I keep gaining weight in spite of a calorie controlled diet and am bloated esp in the face like a puffer fish. I’m not deficient in anything. A little worried
But the GP article said it’s ok to go straight up to optimal dose. So what shall i do now? Go back down to 75 or stick with it? Or could this be reverse T3 going up?
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