Ampulab Plasma tubes are coated with lithium heparin or sodium heparin to inhibit clotting. Heparin activates antithrombin, thus blocking the coagulation cascade and producing a whole blood/plasma sample instead of clotted blood and serum.

Lithium determination should not be preformed in lithium heparin tubes. Samples collected in these tubes are used for plasma determinations in chemistry.

Alat Laboratorium Kesehatan.