16 Frequencies of marked clinical laboratory abnormalities (Grade 3 or 4) reported in at least 2% of patients in the APTIVUS/ ritonavir arms in the phase III clinical studies (RESIST-1 and RESIST-2) after 48-weeks were increased ASAT (6.1%), increased ALAT (9.7%), increased amylase (6.0%), increased cholesterol (4.2%), increased triglycerides (24.9%), and decreased white blood cell count (5.7%).