IRCT20180314039091N1 IRCT 2018-05-21 Zanjan University of Medical Sciences Effect of TSH Level on adverse Outcome of Pregnancy in Subclinical Hypothyroidism The effect of using two subclinical hypothyroid treatment approaches during pregnancy on the adverse outcomes of pregnancy 2018-04-09 anticipated 100 Complete https://irct.ir/trial/30184 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Other, Purpose: Prevention, Randomization description: A specialist at the Metabolic Disease Research Center, participants randomly divided into two group A and B, Blinding description: A specialist at the Metabolic Disease Research Center, participants randomly divided into two groups of control and intervention. 3 Subclinical hypothyroidism. Intervention 1: Intervention group: Levothyroxine tablets are treated with at least 50 micrograms per day and continue throughout pregnancy until delivery. Patient pills are made by Iranian hormones company. Intervention 2: Control group: They do not receive any drug and they are only under follow up. No - There is not a plan to make this available Justification or reason for not sharing IPD is No more information