VACUETTE® 9NC coagulation 3.8 % trisodium citrate (0.129 mol/l) tubes are filled with a buffered trisodium citrate solution. The choice of concentration depends on the laboratory’s procedure. The mixing ratio is 1 part citrate to 9 parts blood.
The additive trisodium citrate contained in the tube prevents blood coagulation by binding Ca-ions.
VACUETTE® Coagulation Tubes are also known as “sandwich” tubes due to their double-wall-technology. The inner tube is made of PP (polypropylene) and prevents the evaporation of liquid. The outer tube is made of PET (polyethylene terephthalate) and guarantees a correct draw volume.
