Coagulation and CTAD tubes are used for examination of coagulation parameters. Coagulation tubes contain a buffered sodium citrate solution. It is available with a citrate concentration of 0.109 mol/l (3.2%) or 0.129 mol/l (3.8%). The mixing ratio is: 1 part citrate solution to 9 parts blood. In addition to buffered sodium citrate, CTAD tubes contain theophylline, adenosine and dipyridamol.
Our blue top sodium citrate blood tubes, also referred to as coagulation tubes or “coag tubes” are used for drawing blood for coagulation studies. See our available 3.2% coag tubes here in a variety of sizes and types.
Greiner Bio-One manufactures high-quality blood collection tubes under the VACUETTE® Blood Tube brand name. Most VACUETTE® Blood Tubes contain chemical additives, which in combination with a pre-determined vacuum, guarantee the correct mixing ratio of blood sample to additive.
Reliable results make VACUETTE® Blood Collection Tubes the optimal collection product for analysis with all current instrumentation. All tubes are CE marked.
* Please note that the CTAD tube is not available for the US market.