my son is 42daya old his activity is normal but his tsh 5,6 uiu /ml my lab normal rang ,4-8,6 uiu/ml and his total t4 level 8,6 ug/dl and my lab normal level is ,4-8,6 uiu /ml my docter says that he is border line and need treatment as the coroleation between two lhormon level is not correct is this true ?plz help