Synonym(s)
Thromboplastin time; TPZ
DefinitionThis section has been translated automatically.
Method for the determination of the prothrombin-thromboplastin time, i.e. the activity of factors II, V, VII and X in citrated plasma after addition of tissue thrombokinase and calcium chloride.
General informationThis section has been translated automatically.
In the Quick Test, the reference value (11 to 16 sec.) found in the plasma of healthy individuals is set as 100% in order to derive from it the 80, 60, 40, 20 and 10% values or the corresponding times in a standard dilution series.
Note(s)This section has been translated automatically.
Values < 70% are considered pathological. Unfortunately, the quick test is not a standardized test procedure. In order to be able to approximately compare the Quick values nevertheless, the WHO has created an internationally recognized reference value, the International Normalized Ratio ( INR), and recommends that this ratio be indicated as a blood clotting value instead of the Quick value in percent.
Prof. Dr. med. Peter Altmeyer