Thrombin Time

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Overview Brief

Thrombin Time is a blood test done to measure the time taken for a clot to form in blood after an excess thrombin has been added.

What is Thrombin Time?

Thrombin Time or thrombin clotting time is a blood test that measures the time taken by blood to clot.

The test is used to diagnose disorders in coagulations of blood. Thrombins are added to plasma of the blood samples. If the time taken by them to clot is long, it shows a defect.

In Thrombin Time, the time taken by the blood to clot should not exceed beyond 20 seconds.

Why is Thrombin Time suggested?

A test of Thrombin Time is suggested in case of:

  • Excessive bleeding.
  • Inappropriate blood clotting.
  • To evaluate the function of fibrinogen.
  • To detect heparin contamination.

How is Thrombin Time performed?

The test of Thrombin Time is performed with blood samples. It involves the following steps:

  • A tight elastic band will be wrapped around your arm.
  • A needle will be used to draw out blood from your vein.
  • The blood will be collected in another tube.

The blood sample collected would then be sent to the lab for checking Thrombin Time.

What are the parameters used in Thrombin Time?

The normal time taken by the blood to clot ranges between 12 to 14 seconds.

Preparation before performing Thrombin Time

You do not need to prepare anything before the test of Thrombin Time.

Post Care after Thrombin Time

After the injection, you might follow these steps to reduce pain:

  • Apply Ice.
  • Take some painkillers.

Sample types in Thrombin Time

The test of Thrombin Time requires only blood samples.

Side effects/risks of Thrombin Time

The risks involved with the injection of thrombin time include:

  • Pain or swell in the arm.
  • Fainting
  • Multiple punctures.

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