Perform Venipuncture Collect a Venous Blood Sample Using the Syringe Method

Steps for Performing Venipuncture

Preparation and Initial Steps

• Venipuncture involves several important steps that require thorough understanding to perform the procedure quickly and accurately.

• Gather necessary supplies: syringe with a 21 or 22 gauge safety needle, vacuum tubes, isopropyl alcohol pads, gauze pads, tourniquet, safety transfer device, hypoallergenic tape, permanent marking pen or labels, lab coat, and gloves.

• Introduce yourself to the patient; verify their identity using two identifiers (e.g., name and date of birth).

• Explain the procedure to the patient and obtain permission for venipuncture while ensuring they are comfortable.

Preparing for the Procedure

• Inspect both arms of the patient; ask if they have a preference for which arm to use.

• Help position the patient's arm straight down in a supported manner; assemble the needle and syringe properly before proceeding.

Performing Venipuncture

• Apply a tourniquet around the patient's arm about three to four inches above the elbow without restricting arterial blood flow.

• Select an appropriate venipuncture site by palpating; clean it with an alcohol pad in a circular motion from center outward.

Inserting Needle and Collecting Blood

• Insert the needle at a 15-degree angle once you see a flash of blood in the hub of the syringe indicating successful entry into vein.

• Release tourniquet before withdrawing needle; apply gentle pressure on puncture site with sterile gauze as you withdraw.

Post-Procedural Steps

• Activate safety device on needle immediately after withdrawal; instruct patient to apply direct pressure on site with gauze.

• Transfer blood into required tubes without pushing on plunger during transfer to maintain sample quality.

• Dispose of all contaminated items properly and document procedure in patient's record after sanitizing hands.