<prompt> The threshold of Middle cerebral aery peak systolic velocity for the diagnosis of fetal anemia is a value --- for the gestational age1 MoM1.5 MoM3 MoM5 MoM  <response>: The MCA PSV is an accurate noninvasive method for the diagnosis of fetal anemia. The threshold of for the diagnosis of fetal anemia is a value 1.5 MoM for the gestational age. Abnormally elevated MCA PSV has a sensitivity of 100 and false positive rate 12 for the diagnosis of fetal anemia. Reference: Practical guide to High Risk Pregnancy and Delivery; 3rd edition; Chapter 14; Rh Alloimmunization 