An elevated white count usually indicates an infection somewhere. This could definitely be the problem, since AZA is an immunosuppressant and you're also on two types of steroids which suppress immunity, as well as Remicade. Have you had any sore throats, ears, cough, etc? You may need to see your general doctor to check for infection.
Moderate to severe left-sided UC (21 cm) diagnosed 2001.
Intolerant to Asacol and rectal mesalamine preparations.
On Prednisone then Entocort 2001-2006 with only short periods off.
Current meds are Colazal,
Azathioprine Remicade, Nature's Way Primadophilus Reuteri.
In remission since April, 2006. Remicade has been my wonder drug.