Hi everyone,
This post comes with a caveat. I’m sat looking through my daughter’s blood test results from the second part of last year. I’m doing this because she’s off college again with some sort of virus, this follows a week of Covid. I’m ashamed to say that I’m only looking at these results with the requisite level of scrutiny because, as many of you are aware, I’ve been poorly myself.
She just turned 18 and is currently on 75mcg of Levothyroxine.
July 2023
TSH 4.08 mu/L (0.47-3.41)
FT4 12.1 pmol/L (9.3-17.6)
Thyroid peroxidase concentration 201 ku/L (0.0-34.0)
She was started on levo (25mcg initially but we pushed for 50mcg). This was GP. Referral to endocrinologist who arranged the following blood tests in August 2023 but decided, once results came in, not to see her and to leave treatment/blood monitoring to GP:
TSH 2.88 (0.47-3.41)
FT4 12.3 pmol/L (9.3-17.6)
TPO antibodies 159.8 ku/L (0.0-34)
These two results confuse me:
FT3 5.4 pmol/L (3.6-5.7) (first time FT3 been tested)
Thyroid stimulating antibody TSI 1.92 iu/L (<0.56)
I confess to knowing very little about the significance of the latter test but a cursory glance at the internet and the forum links it to Graves??
She had a subsequent test at the GP in November:
TSH 3.34 mu/L (0.47-3.41)
FT4 12.2 pmol/L (9.3-17.6)
We requested a dose increase which was granted. She’s on 75 mcg.
Out of the blue yesterday she received a letter to attend an appointment with the same endocrinologist who decided they didn’t need to see her back in August. The appointment is for 14 February.
I’m concerned by the August blood test results, namely the TSI antibodies and the FT3, which appears confusingly high.
Your insight and suggestions are most gratefully received, as ever.
I should add that she’s also been tested for core vits and minerals - all woeful including below range folate and ferritin (July) and bottom of range Vit D. I can provide details if necessary but I just wanted to focus on the thyroid bloods initially.
Thank you.
Original title edited to reflect Slowdragon’s feedback