Detecting, Identifying and Treating Subtypes of CLL CLL is different for every patient, so how do doctors tell which CLL treatment is right? Dr. Kathryn Kolibaba and Dr. Stephen Spurgeon discuss modern tests used to distinguish subtypes of CLL and find a therapy to match. The experts also share their thoughts on the optimal timing for testing. Get email alerts | Subscribe on YouTube | Like on Facebook | Follow on Twitter | Follow on Google+ |