A collection of devices and materials available for use by a patient/layperson outside a clinical setting to collect and, in some cases, mail a capillary blood sample to a clinical laboratory for diagnostic testing or screening purposes. The kit includes a lancet(s), a blood storage device [e.g., collection strip, dry blood collection card/filter paper card, vial] and other items (e.g., alcohol prep pad, gauze pad, bandage strip, a container with a requisition form for mailing to the laboratory); some types may alternatively be in the form of a skin-attached self-contained unit and may feature a blood drawing suction mechanism. This is a single-use device.