How Do You Use A Needle For Blood Collection?

05th January 2022

In order to conduct blood tests, blood samples are needed. To get these samples, a phlebotomist has to draw blood from the patient’s vein using a needle and syringe.

As the needle is hollow, it helps to draw blood easily without causing much pain and discomfort. 

If you want to know how to use a needle for collecting a blood sample, follow this guide. We will show you how to use a blood collection needle to draw blood safely.

Blood Collection Needle:

A blood collection needle is a specialized needle designed specifically to collect a sample of blood. A blood collection needle comes with various features to make the blood collection process easier.

These needle types can be obtained in various sizes depending on the amount of blood to be collected. Blood collection needles come in both single-use and disposable models.

However, it is safe to use disposable needles in order to prevent the transfer of blood-related diseases. In order to collect blood, needles with 21G gauge size is used. As the needle is not really thick or thin, it makes the drawing of blood easier. 

These needles can be purchased from many sources, including online medical stores. A number of websites on the Internet provide a wide selection of collection needles at affordable price rates. 

Nowadays, most blood collection needles come with a safety feature to prevent injuries and contamination. These needs have a hinge protector, which you can activate by pushing it with your thumb.

Once you are done with blood collection, you can simply push the lock to cover and dispose of the needle. It will prevent needlestick problems and transfer of diseases and infection.

Steps to Use a Needle for Blood Collection:

Here are the steps you need to follow in order to collect blood using a blood collection safety needle.

  • Step 1: Prepare Needle

The first thing you need to do is wear gloves and sanitize your hand. After that, you need to prepare the needle. To do that, you need to use a safety hypodermic needle with a 21G gauge size to collect blood. Use a new needle and syringe. You need to insert the gauge into the syringe and prepare it for drawing blood.

  • Step 2: Identify Vein

Now, you need to identify the vein from which you want to draw blood. Once you find the vein, you need to clean that area with pull the skin tight so that you can see the vein clearly.

  • Step 3: Insert the Needle in Vein

After that, you need to hold the needle in another hand and puncture the vein with the pointy tip. 

  • Step 4: Draw Blood

Now, you need to pull the stopper to draw blood slowly from the vein. 

  • Step 5: Remove Needle

Once you get the blood in the syringe, use gauze and put it on the skin where the needle tip is. Now, you need to pull the needle slowly and remove it. Make sure the person keep pressure on the gauze to stop the blood. After that, you need to put a bandage on the area.

  • Step 6: Transfer Blood

Use the syringe and the needle to transfer the blood into the tube. You need to shake the tube gently a few times to avoid coagulation.  

  • Step 7: Dispose Needle

Lastly, push the hinge cover with your thumb and close the needle with the safety cover. Now, you need to properly dispose of the needle. 

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