What does an elevated TSH level of 5.9 mIU/L indicate?

Hi doctor,

I am a 37-year-old female with a normal BMI and a non-smoker. My past medical history includes chronic rhinitis with polyps.

I recently had extensive blood tests conducted for non-specific symptoms, such as throat discomfort, acid reflux, and transient livedo reticularis. These tests were conducted under rheumatology for connective tissue disease, and all the results returned negative.

However, one of the abnormal results was a TSH level of 5.9, while the T4 level was normal. The consultant mentioned that the TSH level was slightly high but then said it was normal and they would inform my general practitioner about it.

About ten months ago, I had a thyroid test done as part of my blood work, and the TSH level was only 2.7. I am unsure if this difference in TSH levels affects the identification of the issue.

I am trying to understand the significance of the TSH result. Can TSH levels sometimes be slightly off without any specific reason, or am I likely to develop hypothyroidism? I have read that a TSH level above 4.5 puts one at risk. What is the percentage likelihood of this condition progressing and getting worse?

Thank you.

Hi doctor,

Thanks for your reply.

I will ask for another blood test in three months. Can thyroid problems cause throat symptoms? About three months ago, I experienced a strong tingling sensation below Adam's apple and a cough (voluntary cough to relieve it). At the time, I also had odd sensations in my throat, as though the food was getting stuck, and a tight chest, which made me worry. I was treated for acid reflux and had a naso endoscopy and barium swallow, both of which were normal. I had no neck lump, swelling, or pain.

The above symptoms lasted about two months. Occasionally, my throat still feels a little tight now and again, though it is much better.

Is there any chance that thyroid problems could have caused this?