Return the kit to a USPS mailbox within 24 hours after doing your screening and collecting your sample. Your sample should be dropped off at a mailbox the same day, or no more than 24 hours after you collect it. Find your nearest mailbox.
Return the kit to a USPS mailbox within 24 hours after doing your screening and collecting your sample. Your sample should be dropped off at a mailbox the same day, or no more than 24 hours after you collect it. Find your nearest mailbox.