You will have several PK blood samples taken at your Day 14 visit. About a quarter of a teaspoon will be taken 30 minutes after you take the atiprimod dose at your Day 14 visit, and then again at 60 minutes, 90 minutes, 2 hours, 3 hours, 4 hours, 6 hours, and 8 hours after that same dose, for a total of 2 teaspoons of blood drawn. You will also be instructed to return to the clinic 24, 48, and 72 hours after your Day 14 visit for a single blood collection. Less than a quarter of a teaspoon of blood will be collected at each of these 3 visits. A single blood collection (about half of a teaspoon) will also be taken at your Day 7, Day 21 and Day 28 visits for PK testing.