My husband has had his third ITP. Episode. The first two were treated with IVIG, platletts, and Prednizone successfully. He has nowhad his third episode, with all of the above showing no improvement in 2 weeks. He has been started on N-plate last week and just had his next dose of 6mcg. He has still shown no upswing in his platlets which are less than 5,000. They have not tried the Anti-D yet. Does anyone know how long it should normally take the N-Plate to kick in and what the next steps with dosing might be and/or what steps might be taken next if N-Plate is determined to be inaffective. Thanks for your help and advice. Shelly