I had a thyroid goitre back in 1985 which was surgically removed & then had another on the other side in 1997 also removed & was told I had just "thyroid remnants" left. I was on 100 mcg Thyroxine after my initial surgery in 1985. Some years ago I started to lose weight at a dramatic rate & after lots of other tests were done it was decided to reduce my levothyroxine to 50 mcg (one daily) & have been on this dose this. I have annual blood tests but only the Serum TSH level. I was told previously other thyroid bloods were not routinely done. In the last few months my weight has crept up although I eat a very healthy diet & exercise daily. I also feel lethargic & often have a nap during the day because of this. I am 70 years old. I have just seen my latest blood tests on my GP's website & the TSH is showing now as 1.82 whereas in 2016 it was 2.01 & in 2015 it was 3.86. Just wondering really why it has gone down so much now from 2015. I'm putting my test results below & would appreciate any replies. thank you
Serum TSH level 1.82 mu/L (0.3 - 4.2mu/L)
eGFRcreat (CKD-EPI)/1.73 m*2 64 mL/min (> 60mL/min)
Serum cholesterol 3.7 mmol/L (N/A)
Serum triglycerides 2.1 mmol/L [Abnormal result] (< 2mmol/L)
Serum HDL cholesterol level 1.4 mmol/L (N/A)
Serum LDL cholesterol level 1.3 mmol/L (N/A)
NON-HDL CHOLESTEROL 2.3 mmol/L (N/A)
Serum alkaline phosphatase 78 u/L (30 - 130u/L)
Serum albumin 46 g/L (35 - 50g/L)
Serum total bilirubin level 5 umol/L (< 21umol/L)
Serum ALT level 19 u/L (10 - 60u/L)
Plasma total protein 69 g/L (60 - 80g/L)
Serum sodium 141 mmol/L (133 - 146mmol/L)
Serum potassium 4.5 mmol/L (3.5 - 5.3mmol/L)
Serum creatinine 81 umol/L (45 - 84umol/L)
Serum chloride 105 mmol/L (95 - 108mmol/L)