I am also on Glivec 400 mg, my white cells are now 4900, i was off glivec for 1 week almost 2 month ago becouse of small number of white cells(2100), but i find now they are stabilised. I must go to blood tests and doctor on every 3 or 4 weeks now, and before i went weekly or twice a week.I saw that you have left few messages before but none answered so I dont know if you will read this topic again. So, if you do...I'll talk to you soon.