A collection of non-sterile devices and materials intended to be used by a layperson to collect and mail a faecal (stool) sample to a clinical laboratory for diagnostic testing or screening purposes (e.g., occult blood, cytology). The kit includes a specimen container(s), preservative, and other items [e.g., collection assistive device(s), labels, and a container with a requisition form for mailing to the laboratory]. This is a single-use device.