Blue-top blood tubes specially designed with double walls are made of polypropylene(PP) and polyethylene terephthalate(PET).
Polypropylene is ideal for sensitive coagulation parameters due to its nonreactive characteristics.
The inner tube is made of polypropylene and prevents the evaporation of liquid. The outer tube is made of polyethylene terephthalate and ensures a long shelf-life for the vacuum.
Sodium citrate is used as anticoagulant to prevent blood from clotting.
Filled with a buffered sodium citrate solution in a concentration of 0.109mol/L (3.2%).
The blood to additive ratio is 9:1. The ratio of blood to anticoagulant is critical for valid prothrombin time results.
Immediately after draw, gently invert the tube 3-4 times in order to activate adequate anticoagulant.
Centrifugation: 2000-2500 g for 10-15 minutes at 18-25° C.
Blood Collection Tubes-- Plain
Needle Holder
Non Vacuum Blood Collection Tube
Blood Collection Tube-Gel & Clot Activator