Man these emergency gov workers are always shown to be either bloodless or incompetent. Keeping the quarantined targets abreast of what is going to happen to them is the best way to keep them cooperative. Also asking for a urine sample wouldn't be the first thing they'd ask for, it'd be the last (unless she had to go midway through the checkup), but then I doubt the mangaka is going for any real accuracy here.
(Hey it's just a manga. It was just to make a joke.)
Quite voices! There's no excuse for bad writing. Now back to drowning you out with booze.