ETG testing can detect 1 beer!

Okay so…I am on probation in Texas for a DWI. I am tested through Averhealth lab for a 10 panel. I had 1 twisted tea 12oz 5%. ( I know, only 1 drink I’m an idiot) at 5pm on Saturday. I had a drug test Monday at 3:30pm, and now I strongly believe I failed..I didn’t do any extreme measures like chug water or anything like that. How can that possibly happen? I am 5’2 and 167pds…I just can believe after 46 hrs it would still be detectable. I haven’t heard anything but I have been given hints that something is up, it’s been 7 days exactly since I tested so I’m sure it’s still awaiting the lab results for levels and all that. What do you think? Am I overthinking this, does anyone have any relation?