| Description 
                                BD Vacutainer Venous Blood Collection Tube Lithium Heparin Additive 4 mL BD Hemogard Closure Plastic Tube Use BD Vacutainer sterile lithium heparin tubes to keep samples for blood chemistry determinations Green top color indicates the tubing is spray coated with 75 USP units of lithium heparin; binds to plasma proteins to keep blood from clotting during blood collection Clear plastic plasma tubes that are 13 x 57 mm with a draw volume of 4 mL Hemogard closure helps phlebotomists and lab workers avoid contact with blood on the tube rim or stopper; shields against blood splashing when opening the tube
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