The Importance of Order of Draw in Phlebotomy: Following the SST Mnemonic

Summary

• The order of draw is a crucial process that phlebotomists follow to ensure accurate laboratory results.
• Phlebotomists in the United States use the acronym "SST" to remember the recommended order of draw.
• Following the recommended order of draw helps prevent Cross-Contamination and ensures accurate Test Results.

Introduction

In the healthcare industry, accurate laboratory results are essential for proper diagnosis and treatment of patients. Phlebotomists play a critical role in the collection of blood samples for testing in clinical labs. To maintain the integrity of these samples and prevent Cross-Contamination, phlebotomists follow a recommended order of draw mnemonic. In the United States, phlebotomists use the acronym "SST" to remember the specific order in which blood samples should be collected. In this article, we will explore the recommended order of draw and its importance in home healthcare, clinical labs, and hospitals across the country.

Recommended Order of Draw Mnemonic: SST

The recommended order of draw used by phlebotomists in the United States is represented by the acronym "SST." Each letter in the acronym corresponds to a specific type of blood collection tube that should be used in a particular order. By following this mnemonic, phlebotomists can prevent contamination and ensure the accuracy of laboratory Test Results.

Step 1: S - Tubes Containing Clot Activator

1. Red-top tubes are typically used for collecting serum samples for chemistry and serology tests.
2. Gold-top tubes (also known as SST tubes) contain a gel separator and Clot Activator, making them ideal for chemistry tests that require serum separation.
3. Phlebotomists should always collect samples in red-top or gold-top tubes first to prevent Cross-Contamination with additives in other tubes.

Step 2: S - Tubes Containing Anticoagulants

1. Light-blue-top tubes are used for coagulation tests such as PT and APTT.
2. Green-top tubes contain Heparin or other anticoagulants and are used for chemistry tests such as electrolytes and ammonia levels.
3. Phlebotomists should collect samples in light-blue or green-top tubes after serum samples to avoid contamination with clot activators.

Step 3: T - Tubes Containing Additives

1. Lavender-top tubes are used for hematology tests such as CBC and blood typing.
2. Pink-top tubes are used for blood banking tests such as crossmatching and antibody screening.
3. Phlebotomists should collect samples in lavender or pink-top tubes last to avoid contamination with other additives.

Importance of Following the Recommended Order of Draw

Adhering to the recommended order of draw mnemonic "SST" is essential for maintaining the accuracy of laboratory Test Results. By following this specific order, phlebotomists can prevent Cross-Contamination between different additives in blood collection tubes. Here are some key reasons why the order of draw is crucial in home healthcare, clinical labs, and hospitals:

Prevention of Cross-Contamination

1. Following the recommended order of draw helps prevent contamination of blood samples with additives from other tubes.
2. Contamination can lead to inaccurate Test Results and potentially impact the diagnosis and treatment of patients.
3. Phlebotomists must prioritize patient safety by following the correct order of draw to ensure reliable laboratory results.

Accuracy of Test Results

1. Proper sample collection and handling are vital for producing accurate laboratory Test Results.
2. The order of draw mnemonic "SST" is designed to maintain the integrity of blood samples and ensure that Test Results are reliable.
3. By following the recommended order of draw, phlebotomists can minimize errors and provide Healthcare Providers with accurate diagnostic information.

Compliance with Professional Standards

1. Phlebotomists are trained to follow industry best practices and standards to deliver high-quality patient care.
2. Adhering to the recommended order of draw is part of phlebotomy protocols that ensure consistency and reliability in blood sample collection.
3. Healthcare facilities, including home Healthcare Providers, clinical labs, and hospitals, require phlebotomists to follow the correct order of draw to meet regulatory requirements and maintain accreditation.

Conclusion

The recommended order of draw mnemonic "SST" is a critical guideline that phlebotomists in the United States follow to ensure the accuracy of laboratory Test Results. By collecting blood samples in the specified order of tubes containing clot activators, anticoagulants, and additives, phlebotomists can prevent Cross-Contamination and maintain the integrity of samples. This systematic approach is essential in home healthcare, clinical labs, and hospitals to provide Healthcare Providers with reliable diagnostic information for patient care. By understanding the importance of the recommended order of draw and following the mnemonic "SST," phlebotomists can uphold professional standards and contribute to the delivery of high-quality healthcare services.

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