Prothrombin Time
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Prothrombin Time
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How It Is Done
The health professional drawing blood will:
- Wrap an elastic band around your upper arm to stop the flow of blood. This makes the veins below the band larger so it is easier to put a needle into the vein.
- Clean the needle site with alcohol.
- Put the needle into the vein. More than one needle stick may be needed.
- Attach a tube to the needle to fill it with blood.
- Remove the band from your arm when enough blood is collected.
- Put a gauze pad or cotton ball over the needle site as the needle is removed.
- Put pressure to the site and then a bandage.
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Last Updated:
September 15, 2008- Author:
- Robin Parks, MS
- Medical Review:
- Anne C. Poinier, MD - Internal Medicine
Brian Leber, MDCM, FRCPC - Hematology
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