Thrombin time (TT)

– Only venous blood is allowed for testing.
– Blood is donated on an empty stomach, after an overnight fast, in the morning.
– Before blood sampling, it is forbidden to drink: tea, coffee, juice, or carbonated drinks.
– 1-2 hours before the blood sampling procedure, you are allowed to drink about 250-300 ml of clean water
– Avoid drinking alcohol and overeating the day before donating blood.
– Exclude fatty, spicy and smoked foods for a day.
– Avoid physical and emotional excitement. Therefore, before the procedure, you should rest for 10-15 minutes to calm down.
– Patients taking hormonal drugs should not violate the dosing schedule on the day of delivery.
– It is advisable to retake the PTI test at the same time.

Thrombin time (TT) is one of the important indicators that determines the ability of blood to clot. This laboratory test is used to estimate the time required for the formation of a fibrin clot when interacting with thrombin. This procedure is important for the diagnosis and control of diseases related to the blood coagulation system.

The principle of the TT test is to add thromboplastin and thrombin to blood plasma. Thromboplastin promotes the formation of thrombin, which in turn converts the soluble protein fibrinogen into insoluble fibrin, which is the basis of the blood clot. The time required for this process is called the thrombin time.

Estimation of thrombin time has important clinical significance:

1. Diagnosis of blood clotting disorders: An increase in TT may indicate various pathological conditions, such as hemophilia, clotting factor deficiency, antithrombin III deficiency, liver dysfunction, and others.
2. Monitoring treatment: In patients taking anticoagulants (e.g., heparin), TT is used to monitor the level of antithrombotic activity of the medication.
3. Assessment of thrombosis risk: In addition, a decrease in thrombin time may indicate an increased risk of blood clot formation in the vessels, which may be caused by various factors, such as genetic predisposition or taking oral contraceptives.

Thrombin time is usually measured in seconds. Normal TT values depend on the methodology used in a particular laboratory, as well as the age and sex of the patient. An increase in thrombin time may indicate a pathological condition, so it is important to compare the results with the normal ranges established in a particular clinical laboratory.

In case of abnormal TT results, doctors conduct additional studies and clinical examinations to determine the pathological condition and prescribe appropriate treatment. Monitoring thrombin time is an important aspect of the treatment of patients with chronic and acute diseases related to the blood coagulation system.

In summary, thrombin time is an important laboratory test for assessing blood coagulation functions. This analysis helps to detect abnormalities in the blood coagulation system, diagnose pathological conditions, and monitor the effectiveness of anticoagulant therapy. Understanding this indicator is important for providing quality medical care and preventing thrombosis and hemorrhage.