Does Menards test for THC on their randomized testing?

The other day i got selected from randomized testing at my store and i am worried that i will be fired for having thc in my system. I work in the opd department and randomly had HR come up to me and tell me that i got selected for randomized testing due to operating the forklift. To tell you the truth i did have a bowl before work but a few hours had passed by the time it got brought up and by then i was already back to normal. Does anyone in the opd/outside yard have any experience with this? did they test you for thc or was it for the harder stuff? they told me i have to wait 48 hours but i cant help but feel anxious about it until i hear back from management/hr.