BD Vacutainer® Plus Plastic Blood Collection Tubes (Heparin)BD Vacutainer Plus Plastic Blood Collection Tubes (Heparin) are vacuum blood collection tubes designed for plasma determination in clinical chemistry testing. Containing lithium or sodium heparin (depending on configuration), these tubes prevent clotting and support rapid plasma separation for accurate laboratory analysis. They are commonly used in hospitals, diagnostic laboratories, and outpatient settings for routine and specialized testing.