I have been prescribed Levothyroxine for several years, after having a private blood test, showing that I had antibodies present. I am on a dosage of 75 mcg daily, but for the past few months have felt very tired, for no apparent reason. Also have picked up a few cold/flu bugs whereas n the past, I have, despite grandchildren, managed to avoid them. I take supplements of Vit D3, magnesium and K2 (My GP has asked me to reduce my VitD as she says my reading is too high at 214.3 nmol/L. I am also on HRT and Testosterone. I am including my blood test results for thyroid function and wondered if these still look okay. I was reading that over supplementing can cause fatigue and poor sleep (which has never been great). I make a point of missing the thyroxine dose the night before a blood test. My weight has stayed constant and I am not overweight. There was also an out of range Mean cell haemoglobin concentration reading, which was slightly high, but not by much. I know the current dosage I am on of Levothyroxine is not high, but wondered if I should perhaps reduce it a little. It's really the fatigue that is becoming tiresome - excuse the pun. Here are the blood test results I have: I would be grateful for any thoughts.
Jul-17 TSH 1.28 (0.27-4.20)
T4 Total 78.6 (64.5-142.0)
Free T4 15.43 (12-22)
Free T3 4.45 (3.1-6.8)
Anti TPO 78.5 (<34)
THYAB 434 (<115)
Jan-19 TSH 0.16 (0.38-5.33)
T4 11.9 (7.0-16)
Sep-19 TSH 0.177 (0.38-5.33)
T4 12.9 (7.0-16.0)
Oct-20 TSH 0.2 (0.39-5.33)
T4 13.1 (7.0-16)
T3 4.8 (3.8-5.33)
May-22 TSH 0.707 (0.34-5.66)
T4 11.3 (7.7-15.1)
Aug-23 TSH 0.207 (0.34-5.6)
T4 11.7 (7.7-15.1)
Oct-24 TSH 0.227 (0.34-5.6)
T4 13.2 (7.7-15.1)
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busybird55
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busybird55, The last three sets of results do not include FT3 readings. Whilst TSH and FT4 might be sufficient for your GP, they are not sufficient to enable knowledgeable members here to answer your question.
If your FT3 is wrong for you (typically too low), this could account for the symptoms you describe. Your FT4 is not especially high, so it may be that you need a dose increase rather than decrease. But we need the full picture 😊
I would not advise adjusting your dose without this information. If you can afford it, a private test would be a good thing to do. Reasonably priced home finger prick tests can be purchased through MonitorMy Health monitormyhealth.org.uk/thyr... and Randox randoxhealth.com/en-GB/at-h...
If you decide to do a self test, do post again as soon as you have the results and members will be more able to help.
Thank you. I think that is the only way I will get a FT3 test. It is a bit of a battle sometimes to get relevant tests from the GP surgery. The first one was private and the second one was a full test prior to a procedure, not from my own doctor. However she is keen to test my Vitamin D again when I have complied with her instructions to stop supplementing (which I am reluctant to do). Appreciate the advice.
GPs don't test FT3 unless both TSH and FT4 are well out of range, and even then, FT3 may not be tested by the lab. the importance of FT3 is still a complete mystery to most medics 😞
Forgot to say you can use code THYROIDUK10 at MonitorMyHealth to get 10% off any test you order from them.
I make a point of missing the thyroxine dose the night before a blood test.
That’s then too long between last dose Levothyroxine and test ….so Ft4 would actually be higher if testing correctly
If you normally take levothyroxine at bedtime/in night ...adjust timings as follows prior to blood test
If testing Monday morning, delay Saturday evening dose levothyroxine until Sunday morning. Delay Sunday evening dose levothyroxine until after blood test on Monday morning. Take Monday evening dose levothyroxine as per normal
When were B12, folate and ferritin levels last tested
Yes vitamin D a bit high
What other vitamin supplements are you taking
Suggest you test thyroid and vitamin levels
Monitor My Health (NHS private test service) offer thyroid and vitamin testing, plus cholesterol and HBA1C for £65
I will take note of the timing before I test. I have just ordered some zinc as I seem to be struggling to get rid of cough/sinus bug at the moment which is probably not helping the fatigue. My HBA1C was tested 5.4% (4-5.9)and IFCC standardized 36 mmol/mol (20.0-41.0). Also cholesterol serum HDL 1.5; non HDL cholesterol 3.4; Serum cholesterol ratio 3.3; serum triglyceride levels 1.1 mmol/L. Calculated LDL 2.9. I can't see that Ferritin or Folate have been tested since the Blue Horizon one I did in 2017. B12 was 601 then and Serum Folate 17.35. Would that not have been included when they did my routine annual test? Perhaps I should ask. It certainly isn't on my NHS record. Apart from Vit D, K2 and magnesium (three different types) I also take collagen.
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Recent thyroid blood tests results are different ? 
Thyroid results analysed please!
High TSH but low T4
Latest blood results
Should I up my Erfa.
