Hi there, I was wondering if the chance of getting side effects like low white blood cells, bone marrow suppression and alike, are higher in the beginning of treatment with imuran?

Because you have to start having your blood checked every 2 - 4 weeks when taking Imuran for the first time. After everything stays good it's enough to have your blood checked 3 -4 times a year.

Is it correct to assume that if you don't have any blood related side effects that heighten the risk of infection in the initial 2 months, it's probably not going to happen later when staying on the same dosage?
Or is it possible that your risk of infection increases months or even years after staying on same dose imuran even though all your blood tests were good all those times in the beginning?

I really am trying to find some sources of information for this, but can't really find it.