Last blood results

[KatVonB]

Hi

The last blood test results i have had are:

Free T3 4.3 pmol/L 2.6-5.7

Free T4 12.2 pmol/L 9.0-19.0

TSH 3.3 mU/L 0.4-4.9

Can anyone explain these results to me please. Bearing in mind i am pregnant and on a dose of 75mcg

Thank u xx

[KatVonB]

Do you guys think im under medicated? I just been reading others results and i am a bit confused 🤷🏻‍♀️

[SeasideSusie Remembering]

Are you sure your FT4 is 4.4?

How do you feel?

TSH is too high for a treated hypo patient, generally we feel best around 1 or below with free Ts in the upper part of their respective reference ranges.

When pregnant I believe the TSH should be less than 2.5 I will tag Clutter as she has links and information about this.

[KatVonB in reply to SeasideSusie]

Gosh so sorry! Im also dyslexic and numbers symbols get mixed up in my head etc!!!

T4 is 12.2

Well spotted!!😘

[SeasideSusie Remembering in reply to KatVonB]

Well, you are definitely undermedicated to have a TSH of 3.3 and your FT4 is rather low in range. As I said, I believe TSH needs to be below 2.5 in pregnancy.

I've found this for now btf-thyroid.org/projects/pr... hopefully Clutter can give you more information.

[Clutter]

KatVonB,

You are undermedicated. TSH >3 increases the risk of miscarriage so I would increase dose by 50mcg to 125mcg now and make an appointment to see your GP for an increased prescription.

The TSH during the first should be in the low-normal range 0.4 - 2.5. When pregnancy is confirmed dose is usually increased by 25-50mcg to ensure good foetal development until the foetus develops its own thyroid gland between 12-14 weeks. NICE also recommends that hypothyroid women planning pregnancy should be referred to endocrinology. cks.nice.org.uk/hypothyroid...

Management of primary hypothyroidism: statement by the British Thyroid Association Executive Committee

13. The serum TSH reference range in pregnancy is 0·4–2·5 mU/l in the first trimester and 0·4–3·0 mU/l in the second and third trimesters or should be based on the trimester-specific reference range for the population if available. These reference ranges should be achieved where possible with appropriate doses of L-T4 preconception and most importantly in the first trimester (1/++0). L-T4/L-T3 combination therapy is not recommended in pregnancy (1/+00).

onlinelibrary.wiley.com/doi...

According the ATA First Trimester TSH levels between 2.5 and 5.0 are associated with increased pregnancy loss

[KatVonB]

Hiya

My dose was increased from 50mcg to 75mcg

Im in second trimester soon going in to third

I was under a very good range in first two trimesters really with a range of 1.3 TSH

It went to 2.6 so he upped it to 75mcg two weeks ago and my results from the blood test are from 2 weeks ago (so just before i took the 75mcg dose)

I have an up coming blood test in 3 weeks and he is going to monitor me then too and tell me if I need an increase

He’s an endo so when i told my locum GP this and the midwife they said he is the expert in this so he knows what he is saying ☹️ i am still confused. So far all other tests on baby have been fine and she is progressing well ☺️☺️ thank God!

Just got 3 weeks to wait and see, i suppose, what they say for results.