Interesting! Thank you for the replies. My WBC has been somewhat elevated more often than not going back at least to 2012/2013. It's possible it may have been elevated as well prior to that, but that's as far back as the records I have access to.
I also believe it may be generally due to IBD as well. Elevated WBC obviously can be a marker of inflammation, which we already know we all have.
I'm not taking any antibiotics and I haven't for a number of years. I previously rotated cirpo and flagyl, but not since 2014. They didn't seem to make any difference when I was on them (other than causing me fatigue and upset stomach). Since my pouchitis is subclinical and generally asymptomatic to very mild symptoms, my surgeon wants to save the "big guns" for when I have a full flare.