There are lots of reasons you might be interested in how long MDMA can be detected after ingestion. For example, you might be worried about an impending drug test or want to know when you’ll feel like your old self again.

Contrary to what's stated elsewhere, the elimination half-life of modafinil is about 15 hours. However, some sources quote the half-life as ~13 hours.

Wondering how long hydrocodone stays in your system? On average, hydrocodone will stay in your system for about 11.4 hours. Note that this duration is just an estimate and does not apply to everyone. There are some caveats.