What Kind Of Tests Use Dark Green Top Tubes

Dark Green Top tubes, also known as sodium Heparin tubes, are a type of blood collection tube used to obtain plasma samples for laboratory testing. These tubes contain a green stopper and are commonly used in healthcare settings for various types of tests. In this article, we will explore the different types of tests that utilize Dark Green Top tubes and why they are chosen for these specific tests.

Types of Tests

1. Basic Metabolic Panel (BMP)

A Basic Metabolic Panel is a group of blood tests that provides information about a person's metabolism, including electrolyte and fluid balance and kidney function. Dark Green Top tubes are used for this test because the sodium Heparin additive helps prevent blood clotting and keeps the sample stable for accurate results.

2. Liver Function Tests (LFTs)

Liver Function Tests are blood tests that measure various enzymes and proteins in the blood to assess liver function. Dark Green Top tubes are preferred for this test because they contain sodium Heparin, which helps preserve the integrity of the sample and prevent interference with the Test Results.

3. Prothrombin Time (PT) Test

The Prothrombin Time test measures how long it takes for blood to clot and is used to assess blood clotting function. Dark Green Top tubes are used for this test to prevent clotting and ensure accurate results.

Reasons for Using Dark Green Top Tubes

There are several reasons why Dark Green Top tubes are chosen for certain types of tests:

  1. The sodium Heparin additive helps prevent blood clotting, ensuring that the sample remains stable for testing.

  2. Dark Green Top tubes are suitable for tests that require plasma samples, as the sodium Heparin additive separates the plasma from the red blood cells.

  3. The use of Dark Green Top tubes reduces the risk of contamination and ensures accurate results for laboratory testing.

Collection and Handling of Dark Green Top Tubes

When collecting blood samples using Dark Green Top tubes, it is important to follow proper procedures to ensure accurate Test Results:

  1. Ensure that the tube is properly labeled with the patient's information before collecting the sample.

  2. Use a clean, alcohol swab to prepare the site for Venipuncture and allow it to dry completely before collecting the sample.

  3. Fill the tube to the appropriate level indicated on the tube, ensuring that the proper blood-to-additive ratio is maintained.

  4. Gently invert the tube several times to mix the blood with the sodium Heparin additive and prevent clotting.

Conclusion

Dark Green Top tubes are commonly used in healthcare settings for a variety of tests that require plasma samples. The sodium Heparin additive in these tubes helps prevent blood clotting and ensures the stability of the sample for accurate Test Results. By understanding the types of tests that utilize Dark Green Top tubes and the reasons for using them, healthcare professionals can ensure the reliability of laboratory testing and provide quality patient care.

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