Venipuncture: Blood Draw Procedure Explained

Venipuncture is the insertion of a needle or cannula into a vein to withdraw blood. It's a routine procedure performed by trained healthcare professionals for lab tests (CBC, chemistry, serology).

Key Steps

• Select suitable vein (usually in the arm).
• Cleanse site, apply tourniquet.
• Insert sharp needle/cannula, draw blood into collection tubes.
• Release tourniquet, withdraw needle, apply pressure.

Proper technique ensures patient safety and sample integrity.