Adive ref. Ft3 blood test results: Hi. Using... - Thyroid UK

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Adive ref. Ft3 blood test results

Harlech profile image
10 Replies

Hi. Using the calculator.

October 2019 prior to taking levo,

FT4 42% 16.2. ( 12 .0 22.0

Ft3. 57.84%. 5. 24 (3.1 6.8

November 2019. .started levo 25 alternative days for 4 & half month's later, increased to taking levo daily.

August 2020

FT4. 46 %. 16.6

Ft3 50 % 4.95. (range as above

Levo was increased to 50 daily

March 2021. Blood tests

FT4. 54%. 17.4

Ft3 26.32 %. 4.61 ( range as above

The reason for my question ft4 as Increased,

Ft3 Decreased.

All advice appreciated, as I have recieved a text, relating to a phone call appointment with endrorinlogist, due soon.

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Harlech profile image
Harlech
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Lotika profile image
Lotika

Hi - Assuming all the blood tests were all done on the same protocol (fasting, first thing in the morning is the easiest way to achieve this so that we are comparing like with like) then I would say - from my rickety understanding - that as your medication is increased, it starts to do the work for your thyroid, effectively taking over. On low levels of medication your TSH was probably not very suppressed, so the thyroid would have been able to produce some residual T3 on its own. On higher levels of medication your TSH is more suppressed, so you are relying on your body to convert the T4 medication into T3. Because of this, many of us actually feel worse when we first start taking medication as being inadequately medicated is - depending on your mileage - as bad or worse than not being medicated at all.

Optimum levels of ferritin and selenium seem to help the conversion process from T4 to T3. I would also say that with fT4 @ 54% through range, you look under medicated and more levo would be the next thing to try, as well as getting vitamin levels into a decent place: d, b12 and folate are also worth looking at. Most of us need fT4 towards the higher end of the range to produce enough fT3 and some of us, as I imagine you know, still don’t manage and need additional T3 medication. At this point, I don’t think it is clear which of those categories you fall into, as more fT4 to work with and some good vitamin levels might fix everything and get that conversion working. There is a big difference between vitamin levels “in range” and “optimal” of course, just as there is with thyroid hormones.

I imagine you feel quite unwell at present? I had very similar results recently and did not like them one bit!

Harlech profile image
Harlech in reply to Lotika

Firstly I thank you for your reply.No not feeling great, I have ordered another test from b/Horizon so i will get that done some time this month.

Oct 2019 B12 1342. ( Consider reducing dose 569

Aug. 2020 B12 1311. (. Same as above

I haven't take any B12

Aug 2020. folate 7.00. (8.83 60.8

I did purchase folate

Vit D is on prescription those levels go from 70 to 129

Selenium I tried to take that but I terrible headaches

Magnesium have got a spray.

I just couldn't understand why ft3 had dropped.

I know my gp will not do an increase as she referred me to endrorinlogist, which was a phone call & who took some persuading to increase to 50, I recieved a letter from her in which she as stated she will not increase anymore, if things aren't resolved she will reduce back to 25.

I will just have to wait on the next blood test results.

(Blue horizon gold)

Lotika profile image
Lotika in reply to Harlech

Oh dear. It sounds as if - if I have understood correctly - neither the GP nor the endo are being very helpful? I am out of my depth with vitamins but I know that SeasideSusie and humanbean understand about these things, so I have tagged, I hope.

SlowDragon profile image
SlowDragonAdministrator

How old are you

Standard starter of levothyroxine is 50mcg

March result shows you are under medicated and ready for next dose increase

Up to 75mcg daily (or perhaps 75mcg and 50mcg on alternate days initially)

Always same brand of levothyroxine

Retest in 6-8 weeks

Always test as early as possible in morning and before eating or drinking anything apart from water. Last dose levo 24 hours before test

When were vitamin D, folate ferritin and B12 last tested

Harlech profile image
Harlech in reply to SlowDragon

Firstly covid as put a hold on all of us.

Female age 73.

Getting an increase maybe difficult as the gp as passed things over to endrorinlogist who as not meet me, my consultation with her was a phone call, my gp hadn't given her any blood test results even though all b/Horizons results had been printed & handed into the surgery.

Conversation with endro. took me awhile to get an increase in October 2020, to the point I ended up with me saying I not stupid. Couple weeks later I received a letter from her also my gp had 1, she mentioned if my symptoms hadn't resolved the dosage would go back to 25.

Getting the same brand can be difficult I have had teva mercury & this month Almus boots say its what the get sent, think maybe supple issues at present.

All Blood taken around 9am - 9-30am, (yes to no levo & only water, had read about this sometime ago)

Vit D folate Ferritin & B12 done Aug. 2020

Folate was low 7. (8.83 - 60.8)

B12. 1311. Top range. 569

I have ordered from b/Horizon gold 1, for later this month, so see what those results show.

SlowDragon profile image
SlowDragonAdministrator in reply to Harlech

Hopeless endocrinologist by sound of it ...most likely diabetes specialist

What vitamin supplements are you currently taking

B12 high .. have you taken an6 multivitamins or any B vitamins in last year?

Low folate

supplementing a good quality daily vitamin B complex, one with folate in (not folic acid) may be beneficial.

This can help keep all B vitamins in balance

Difference between folate and folic acid

chriskresser.com/folate-vs-...

B vitamins best taken after breakfast

Igennus Super B is good quality and cheap vitamin B complex. Contains folate. Full dose is two tablets per day. Many/most people may only need one tablet per day. Certainly only start on one per day (or even half tablet per day for first couple of weeks)

Or Thorne Basic B is another option that contain folate, but is large capsule

IMPORTANT......If you are taking vitamin B complex, or any supplements containing biotin, remember to stop these 7 days before ALL BLOOD TESTS , as biotin can falsely affect test results

endo.confex.com/endo/2016en...

endocrinenews.endocrine.org...

Vitamin D looks good

How much vitamin D are you currently taking

Levothyroxine doesn’t top up failing thyroid....it replaces it

Regardless of age, once we start on levothyroxine, dose should be increased slowly upwards in 25mcg until TSH is always under 2. Ft4 and Ft3 should be at least 60% through range

guidelines on dose levothyroxine by weight

Even if we frequently don’t start on full replacement dose, most people need to increase levothyroxine dose slowly upwards in 25mcg steps (retesting 6-8 weeks after each increase) until eventually on, or near full replacement dose

gp-update.co.uk/Latest-Upda...

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.

BMJ also clear on dose required

bmj.com/content/368/bmj.m41

bestpractice.bmj.com/topics...

Guidelines are just that ....guidelines. Some people need more some less

healthunlocked.com/thyroidu...

SlowDragon profile image
SlowDragonAdministrator in reply to Harlech

Email Thyroid UK for list of recommend thyroid specialist endocrinologists...NHS and Private

tukadmin@thyroiduk.org

The aim of levothyroxine is to increase dose upwards in 25mcg steps until TSH is ALWAYS under 2

When adequately treated, TSH will often be well below one.

Most important results are ALWAYS Ft3 followed by Ft4.

When adequately treated Ft4 is usually in top third of range and Ft3 at least 60% through range (regardless of how low TSH is)

Extremely important to have optimal vitamin levels too as this helps reduce symptoms and improve how levothyroxine works

High cholesterol linked to being under medicated

Harlech profile image
Harlech in reply to SlowDragon

Hi. I already have thyriodUK information, unfortunately there isn't anyone within reasonable distant to myself.Vit's

Igennus super B complex, I randomly take these due to my high B12 level, I have taken health leads folate due to being under range, vit D on script fultium 800iu daliy, but on some days use BetterYou 3000 with k2 mk7, magnesium spray on legs at night.

I get bloods done this month.

SlowDragon profile image
SlowDragonAdministrator in reply to Harlech

Many specialists are currently doing consultations on zoom on computer or by telephone

Means distance is not an issue

Harlech profile image
Harlech in reply to SlowDragon

Thank you for the above information.I have received today my phone appointment with nhs endro for 27th of May, that's if it happens should have had 1 in January but never happened.

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