BD SurePrep Capillary Tubes-Heparinized. No other hematocrit tube contains more safety technology. In response to the need for advancements in safer blood handling, BD introduces SurePrep. With its unique self-sealing plug and multilayered mylar wrap, BD SurePrep reduces exposure to HIV, HBV and other blood borne pathogens. Seals automatically when the blood sample touches the Self-Sealing plug. With BD SurePrep, specimen collection has never been easier or safer. Simply fill the tube, then hold vertically, centrifuge and read. Even in the event of accidental breaks, the protective mylar wrap helps contain the blood and minimizes exposure to glass fragments. 10 vials of 100 tubes/vial (1000/sp).