If you have a severe flare up and need Cipro and Flagyl, your WBC will usually change. Keep in mind that diverticulosis is not the same as inflammed diverticulitis. Good luck!
Patients with diverticulitis will usually have elevated WBC, although patients with early and/or mild diverticulitis may have a normal WBC count. This result may also be blunted in the elderly or immunocompromised.