Understanding the Differences Between Serum Separator Tubes (SST) and Red Top Tubes for Blood Collection in Medical Laboratories - A Comprehensive Guide

Written By

Summary

  • Serum separator tubes (SST) and Red Top tubes are commonly used for blood collection in medical laboratories and phlebotomy practices in the United States.
  • SST tubes contain a gel separator that separates the serum from the blood cells during centrifugation, while Red Top tubes do not have a gel separator and require manual separation of serum from blood cells.
  • The choice between SST and Red Top tubes depends on the specific tests being performed, as well as the laboratory's standard operating procedures and the preferences of Healthcare Providers.

Introduction

When it comes to blood collection in medical laboratories and phlebotomy practices in the United States, two common types of tubes are frequently used: serum separator tubes (SST) and Red Top tubes. These tubes play a crucial role in the accurate testing and diagnosis of various medical conditions, but what are the differences between using an SST and a Red Top tube for blood collection?

Serum Separator Tube (SST)

A serum separator tube, commonly referred to as an SST, contains a gel separator that is used to separate the serum from the blood cells after centrifugation. The gel separator is located at the bottom of the tube and forms a barrier between the serum and the blood cells. When the tube is centrifuged, the gel separator moves to the top of the tube, creating a clear separation between the serum and the blood cells.

Advantages of SST Tubes

  1. Efficient separation of serum from blood cells
  2. Reduced risk of hemolysis due to gel barrier
  3. Convenient and time-saving for laboratory technicians

Disadvantages of SST Tubes

  1. Costlier than Red Top tubes
  2. Not suitable for tests requiring whole blood samples
  3. Potential interference from gel separator in certain assays

Red Top Tube

A Red Top tube, on the other hand, does not contain a gel separator like an SST Tube. The serum is manually separated from the blood cells after centrifugation by carefully pipetting off the serum layer. This manual separation process requires more time and precision compared to using an SST Tube.

Advantages of Red Top Tubes

  1. Cost-effective option for blood collection
  2. Compatible with a wide range of tests
  3. No interference from gel separator in assays

Disadvantages of Red Top Tubes

  1. Higher risk of hemolysis due to manual handling
  2. Time-consuming for laboratory technicians
  3. Potential for errors in serum separation

Choosing Between SST and Red Top Tubes

When deciding between using an SST or a Red Top tube for blood collection, Healthcare Providers and laboratory technicians must consider several factors, including the specific tests being performed, the laboratory's standard operating procedures, and any potential cost considerations. Some tests may require whole blood samples, making an SST Tube unsuitable for use, while other tests may be more easily performed with the efficient separation provided by an SST Tube.

Factors to Consider

  1. Type of tests being performed
  2. Laboratory protocols and procedures
  3. Cost of tubes and materials
  4. Healthcare provider preferences

Conclusion

In conclusion, the choice between using a serum separator tube (SST) and a Red Top tube for blood collection in medical laboratory and phlebotomy practices in the United States depends on a variety of factors, including the specific tests being performed, laboratory protocols, cost considerations, and healthcare provider preferences. While SST tubes offer efficient separation of serum from blood cells, Red Top tubes provide a cost-effective and versatile option for blood collection. Ultimately, Healthcare Providers and laboratory technicians must carefully consider these factors when selecting the appropriate tube for blood collection to ensure accurate testing and diagnosis.

a-male-phlebotomist-ties-a-tourniquet-on-a-female-patient

Disclaimer: The content provided on this blog is for informational purposes only, reflecting the personal opinions and insights of the author(s) on the topics. The information provided should not be used for diagnosing or treating a health problem or disease, and those seeking personal medical advice should consult with a licensed physician. Always seek the advice of your doctor or other qualified health provider regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. If you think you may have a medical emergency, call 911 or go to the nearest emergency room immediately. No physician-patient relationship is created by this web site or its use. No contributors to this web site make any representations, express or implied, with respect to the information provided herein or to its use. While we strive to share accurate and up-to-date information, we cannot guarantee the completeness, reliability, or accuracy of the content. The blog may also include links to external websites and resources for the convenience of our readers. Please note that linking to other sites does not imply endorsement of their content, practices, or services by us. Readers should use their discretion and judgment while exploring any external links and resources mentioned on this blog.

Related Videos

Previous

The Importance of Order of Draw Protocol in Medical Laboratories

Next

Symptoms of Infection After a Blood Draw: Recognizing and Responding to Potential Risks