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Prothrombin time (PT-INR)

Test Details

Prothrombin Time (PT) is a laboratory test used to evaluate the extrinsic and common coagulation pathways. It is usually reported in seconds and standardized using the International Normalized Ratio (INR). PT is widely used to monitor patients on anticoagulant therapy (such as warfarin), and to help diagnose bleeding disorders, liver disease, or vitamin K deficiency. A prolonged PT indicates delayed clotting and a higher risk of bleeding.

Blood & Immunity

Prothrombin time (PT-INR)

Test Code: MTC00833

Prothrombin Time (PT) is a blood test that measures how long it takes blood to clot.

Sample Type

Blood

Preparation

Without Fasting

TAT Turnaround time (TAT)

Results Within 4 Hours

000

KWD

Home Visit Service

+ Home visit fee per region

000

KWD

Home Visit Service

+ Home visit fee per region

000

KWD

Home Visit Service

+ Home visit fee per region

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Frequently Asked Questions

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The main purpose is to assess blood clotting and monitor therapy. INR is a standardized value calculated from PT for global comparison. PT increases in liver disease, vitamin K deficiency, or with anticoagulant use. Liver disease reduces clotting factor production, leading to prolonged PT. Yes, PT is the main test for monitoring warfarin therapy. PT evaluates the extrinsic pathway, while APTT evaluates the intrinsic pathway.

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