Hi again . Id be so grateful if someone could help me with my thyroid function test which I got a copy of recently and were taken in February as I haven't a clue what they mean at the time I think I was on 100mg of levo but was just feeling really sick + getting more + more symptoms. Thank you for your help and time in advance. PS these results were when he upped my levo to 100. Before that i was on ,,75,mg for approx a year. Serum tsh level - 0.42 mu/L -0.30-6.00mu/L. Serum free T4 level - 15.9 pmol/L -. 10-22.00pmol/L. 18th December,2015. Full blood count (abd) - just out of normal range. Thanks again.