Plasma tubes with separating gel for clinical chemistry are available with spray-dried lithium heparin additives.

• It act as stable barrier between plasma and cells providing analyte stability and better sample quality
• Correct mixing of the tubes immediately after the blood sample collection is important to avoid micro clotting
• Plasma separation tubes should be gently inverted 180° and back 8 to 10 times

During the centrifugation of these tubes, an inert gel separates the plasma and the cells preventing the contamination of the plasma from the separated cellular components.