How To Choose Correct Blood Collection Tube

Article

Apr 7

When it comes to drawing blood for laboratory testing, using the right blood collection tube is crucial. Different tests require different types of tubes to ensure accurate results. In this article, we will discuss how to choose the correct blood collection tube based on the tests being performed.

Understanding Blood Collection Tubes

Blood collection tubes come in various colors, each indicating the additives and treatments used in the tube. These additives are essential for preserving the blood sample and ensuring accurate test results. Some common additives found in blood collection tubes include:

Anticoagulants - prevent blood from clotting
Preservatives - maintain the stability of certain analytes
Separators - help separate serum or plasma from blood cells

It is essential to understand the different types of blood collection tubes and their purposes to ensure that the correct tube is used for each test.

Types of Blood Collection Tubes

There are several types of blood collection tubes commonly used in clinical laboratories. Some of the most common types include:

Red-Top Tubes: These tubes do not contain any additives and are used for collecting serum samples.
Lavender-Top Tubes: These tubes contain EDTA, an anticoagulant, and are used for collecting whole blood for hematology tests.
Green-Top Tubes: These tubes contain heparin, an anticoagulant, and are used for collecting plasma samples for chemistry tests.

Choosing the Correct Blood Collection Tube

When choosing a blood collection tube for a specific test, there are several factors to consider, including the type of test being performed and the additives required for sample preservation. Here are some tips on how to choose the correct blood collection tube:

1. Consult the Testing Guidelines

Before drawing blood for a specific test, consult the testing guidelines to determine the type of tube and additives required for that test. Certain tests may require specific tubes with particular additives to ensure accurate results.

2. Consider the Sample Type

Depending on whether you are collecting serum, plasma, or whole blood, you will need to choose the appropriate tube with the correct additive. For example, if you are collecting serum samples, a red-top tube without any additives would be suitable.

3. Check the Tube Color

Each color-coded tube corresponds to a specific additive used in the tube. Familiarize yourself with the color-coding system to ensure that you are using the correct tube for the test. Using the wrong tube could lead to inaccurate results.

4. Verify Expiration Dates

Before using a blood collection tube, check the expiration date to ensure that the additives are still effective. Using expired tubes could affect the integrity of the sample and compromise the accuracy of the test results.

5. Handle Tubes Properly

Proper handling of blood collection tubes is crucial to prevent contamination and ensure accurate results. Make sure to follow proper venipuncture techniques and store the tubes according to the manufacturer's recommendations.

Conclusion

Choosing the correct blood collection tube is essential for obtaining accurate laboratory test results. By understanding the different types of tubes and their purposes, healthcare professionals can ensure that the right tube is used for each test. Remember to consult testing guidelines, consider the sample type, check tube colors, verify expiration dates, and handle tubes properly to avoid errors and ensure reliable test results.

For more information on blood collection tubes, please visit the BD Vacutainer Tube Guide.

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Lauren Davis, BS, CPT

Lauren Davis is a certified phlebotomist with a Bachelor of Science in Public Health from the University of Miami. With 5 years of hands-on experience in both hospital and mobile phlebotomy settings, Lauren has developed a passion for ensuring the safety and comfort of patients during blood draws. She has extensive experience in pediatric, geriatric, and inpatient phlebotomy, and is committed to advancing the practices of blood collection to improve both accuracy and patient satisfaction.

Lauren enjoys writing about the latest phlebotomy techniques, patient communication, and the importance of adhering to best practices in laboratory safety. She is also an advocate for continuing education in the field and frequently conducts workshops to help other phlebotomists stay updated with industry standards.