This automatic lancing device contains a sterile spring loaded 28 gauge 1.8 mm ultra sharp lancet recommended for safe, painless capillary blood sampling. Operation is trigger initiated and instantaneous thereby eliminating the natural hesitation and "flinching" response of self initiated finger pricks. The lancet penetrates to the ideal depth for consistent and adequate whole blood samples thereby minimizing the chances of over or under puncturing. As a safety factor, the lancet is instantly and permanently retracted back into the device housing after use to to prevent subsequent reuse, allow for routine disposal, and eliminate inadvertent or accidental punctures. Single use only.