[Technetium]

You did NOT remember correctly. The only way you're going to have effects for a week is by using it for a week! The effects are VERY predictable, as studies have shown first-hand through trials for many decades. The only thing that isn't absolutely certain is an individual's rate of processing THC-COOH, which is only a leftover metabolite of what was once psychoactive THC (THC-A). You will absolutely test positive for THC-COOH a week after a single usage, sometimes up to a month; because it's stored in your fat. For this reason, it can even be detected up for multiple months in heavy users! An inactive metabolite is unable to cause any psychoactive effects.