In order to conduct a blood test, a blood sample is required. To obtain these samples, a phlebotomist must use a needle and syringe to draw blood from the patient's vein. Because the needle is hollow, it helps to draw blood easily without causing too much pain and discomfort.

If you want to know how to collect a blood sample using a needle, please follow this guide. We will show you how to safely draw blood using a blood extraction needle.

Selection and Safety Features of a Blood Collection Needle

Blood collection needles are specialized needles designed specifically for collecting blood samples. These needles have various features that make the blood collection process easier. Depending on the amount of blood to be collected, the needles come in different sizes. Blood collection needles are available in both disposable and reusable models.

For safety reasons, using disposable needles can prevent the transfer of blood-related diseases. A needle size of 21G is commonly used because it is neither too thick nor too thin, making it convenient for drawing blood.

These needles can be purchased from many sources, including online medical stores. Many websites on the internet offer a variety of collection needles at affordable prices.

Nowadays, most blood extraction needles come with safety features to prevent injury and contamination. These needles usually have a hinge protector that can be activated by pushing it with the thumb. After collecting blood, simply push the protector to cover the needle and dispose of it. This design helps prevent needle stick injuries as well as the spread of diseases and infections.

Steps for Collecting Blood Using a Blood Collection Needle

The following are the steps to follow when collecting blood using a safe blood extraction needle.

Step 1: Prepare the blood extraction needle

First, put on gloves and sanitize your hands. Next, prepare the needle. Use a 21G safety subcutaneous injection needle to collect blood. Make sure to use a new needle and syringe, insert the needle into the syringe, and prepare to draw blood.

Step 2: Identify the vein

Identify the vein from which to draw blood. Once the vein is located, tighten the skin over the area to cleanse it and make the vein clearly visible.

Step 3: Insert the blood extraction needle into the vein

Hold the needle and pierce the vein with the tip.

Step 4: Draw blood

Pull the plunger to slowly draw blood from the vein.

Step 5: Remove the blood extraction needle

Once enough blood has been collected in the syringe, press a gauze on the skin where the needle tip is, then slowly pull out the needle. Make sure the patient applies pressure to the gauze to stop the bleeding. Afterward, apply a bandage to the area.

Step 6: Transfer the Blood

Use the syringe and needle to transfer the blood into a test tube. Gently shake the test tube a few times to prevent blood from clotting.

Step 7: Dispose of the blood extraction needle

Push the hinge protector with your thumb to cover the needle with the safety cap, then dispose of the needle properly.

By following these steps, you can safely collect blood samples using the blood extraction needle, ensuring the entire process is smooth and risk-free.