Bleeding Time Test | Procedure, Normal Range | Duke’s Method |
Автор: Dr. Sandeep Kaur
Загружено: 2025-11-12
Просмотров: 50
Описание:
1. Bleeding Time (BT) is the time interval between the puncture of the skin and the cessation of bleeding.
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2. Requirements:
• Sterile lancet or needle
• Filter paper or blotting paper
• Stopwatch
• Spirit swab / alcohol swab
• Cotton
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3. Procedure (Duke’s Method):
1. Clean the fingertip (or earlobe) with alcohol and allow it to dry.
2. Prick the site using a sterile lancet — deep enough to cause free flow of blood.
3. Start the stopwatch immediately.
4. Every 30 seconds, gently touch the edge of the drop of blood with filter paper — do not touch the wound directly.
5. Continue blotting until bleeding stops completely.
6. Note the time interval between the puncture and the last appearance of blood on the paper.
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4. Normal Value:
🩸 1 to 3 minutes (Duke’s method)
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