<s>[INST] Hi Doc , I am planning for a IVF preganancy, my TSH is 18 uIU/ml. What are the consequences of this. Should I go for IVF or wait for TSH to be controlled with medication. My age is 33 years. The IVF specialist has prescribed me Eltroxin 50mcg. Do I need to consult and Endocrinologist. Thanks - Prerna [/INST] Hi arena, Welcome to Chat Doctor . Normal TSH should be between 0.5 to 5 mini/ml. Yours is on higher side. You need to wait till your thyroid profile comes to normal range. Because if ts his high it will affect implantation of embryo by inhibiting normal endometrium growth.Also, if you conceive chances of baby getting hypothyroidism is more. So its always advice to control thyroid levels and plan for pregnancy.  Ya it's better if it is possible for you to consult an endocrinologist. Hope I have been helpful. Regards Chat Doctor.  </s>