Serum Separator Tubes (SST) in Medical Labs: Tests, Handling, and Processing

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Summary

  • Serum Separator Tubes (SST) are commonly used in medical labs and phlebotomy in the US
  • Tests performed using SST tubes include lipid profile, thyroid function, liver function, and more
  • Proper handling and processing of SST tubes are essential for accurate Test Results

Introduction

Medical laboratories play a crucial role in the healthcare system by providing essential diagnostic information to doctors and patients. One common type of blood collection tube used in these labs is Serum Separator Tubes (SST). In this article, we will explore the specific tests that are typically performed using SST tubes in medical labs and phlebotomy in the United States.

What are Serum Separator Tubes (SST)?

Serum Separator Tubes, also known as "tiger top" tubes, contain a special gel that separates the blood into serum and blood cells after centrifugation. This allows for easy and clean separation of the serum, which is then used for various Diagnostic Tests.

Common Tests Performed Using SST Tubes

There are various tests that can be performed using serum obtained from SST tubes. Some of the most common tests include:

Lipid Profile

  1. Total cholesterol
  2. Low-density lipoprotein (LDL) cholesterol
  3. High-density lipoprotein (HDL) cholesterol
  4. Triglycerides

Thyroid Function Tests

  1. Thyroid-stimulating hormone (TSH)
  2. Thyroxine (T4)
  3. Triiodothyronine (T3)

Liver Function Tests

  1. Alanine aminotransferase (ALT)
  2. Aspartate aminotransferase (AST)
  3. Alkaline phosphatase (ALP)
  4. Total bilirubin

Renal Function Tests

  1. Blood urea nitrogen (BUN)
  2. Creatinine
  3. Electrolytes (sodium, potassium, chloride)

Blood Glucose

  1. Fasting blood sugar
  2. Glucose tolerance test

Proper Handling and Processing of SST Tubes

It is crucial to follow proper procedures when handling and processing SST tubes to ensure accurate Test Results. Some key points to keep in mind include:

Collection

  1. Follow proper Venipuncture techniques to avoid hemolysis
  2. Fill the tube completely to maintain the correct blood-to-additive ratio

Processing

  1. Invert the tube gently several times to mix the blood with the gel separator
  2. Allow the blood to clot by leaving the tube undisturbed for the recommended time

Centrifugation

  1. Centrifuge the tube at the recommended speed and duration to ensure proper separation of serum
  2. Avoid vigorous shaking or mixing of the tube after centrifugation

Storage

  1. Store the tubes upright to prevent mixing of serum and gel separator
  2. Keep the tubes at the recommended temperature and time before analysis

Conclusion

Serum Separator Tubes are an essential tool in medical laboratories for performing a wide range of Diagnostic Tests. Understanding the specific tests that are typically performed using SST tubes and following proper handling and processing procedures are crucial for obtaining accurate and reliable results. Healthcare professionals must ensure that SST tubes are used correctly to provide the best possible care for patients.

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