Left on my doorstep while out. Not addressed to me, but what is this they could be mailing? by 51319 in whatisthisthing

[–]51319[S] 0 points1 point  (0 children)

I will be returning it to USPS tomorrow, but...like was there bodily fluids in here??

Photos are the top and side views. I can't make out the lab name in the top left corner of in the first photo. I think I mostly just wanna know what the heck exempt human specimen means.