Our office is available for walk-in sample submissions Monday through Friday from 9:00 AM until 5:00 PM. For after-hours sample drop-offs, utilize our convenient 24-hour dropbox (located next to our front entrance on the north side of the building), checked multiple time daily on weekdays at 9:00 AM, 11:30 AM, 2:00 PM, 4:00 PM, and 5:00 PM. If you require expedited service, we suggest opting for a walk-in submission to ensure timely receipt of your samples into our system.