- Blood (about 2 teaspoons) will be drawn for pharmacokinetic (PK) testing before participant's dose of study drug. Blood (about 1 teaspoon) for PK testing will also be drawn 2 times over the 2 hours after the dose. During Cycle 2, blood will only be drawn 1 time after the dose. PK testing measures the amount of study drug in the body at different time points.