Gregory Services and the collection facilities it utilizes employ a strict and exacting chain of custody method of specimen collection to ensure accuracy of donor identification and validity of the specimen.

Overview of the Specimen Collection Process:

• Donor identification is verified by checking a driver’s license or other acceptable form of positive identification.
• Donor is asked to remove bulky outer garments.
• Donor is asked to wash hands prior to collection. (DOT Requirement)

Collection facilities employ the following safeguards to reflect the highest standards of integrity:

• A single toilet rest room without access to free running water.
• Toilet tank has a security seal.
• Dye is placed in the toilet water.
• Soap or other possible contaminants are removed from rest room.
• Specimen temperature and volume are within approved limits.
• Collector performs only one collection at a time.
• Specimens are sealed, in tamper-evident containers.
• A specimen chain of custody is maintained at all times.
• The same collector follows the collection procedure to completion.
• Specimens are transported to the laboratory by a secure courier the same day of collection whenever possible.
• Split sample collections are performed for Department of Transportation-related tests.