The diagnosis usually based on clinical history& examination , and
by ultrasound ( usually transvaginal one ) , which is used to differentiate
miscarriage from other type of early pregnancy complication as ectopic
pregnancy or molar pregnancy , also to know the type of miscarriage .There's no specific treatment and the essential task is to establish that
the miscarriage is threatened and is not becoming inevitable .- Clinical surveillance including weekly ultrasound examination , and an
evaluation of serum measurements of the beta subunit of hCG ,
progesterone and pregnancy associated placental protein A( PAPP-A) .