VACUETTE® Blood Collection Tube, Z No Additive, Non-Ridged, White Cap with Black Ring - 3 mL - 13 x 75 - Case of 1200Designed to improve safety and hygiene during specimen collection procedures thanks to virtually unbreakable PET plastic that's as clear as glass No additive tubes are used in determinations for clinical chemistry and hormones, microbiological serology, immunology, TDM and crossmatching After one hour, blood in the tube is completely coagulated Evacuated and are sterile on the inside Typically used as discard tubes or as an alternative to serum tubes