We are developing an oncology trial, 28-day cycle, with study drug administered on day 1-7 (self-administered oral drug) and day 8 infusion.

Would you typically perform drug accountability (return of IP) on day 8 of the 28 day cycle (next visit)? Or at the end of the 28-day cycle (day 1, prior to next cycle dispensed)?

I am interested to learn from other research nurses in USA/Canada/Europe/Asia- when performing drug accountability, what is your local institutional practice or preference?