For which type of tests is a lavender tube specifically utilized?

The lavender tube is primarily used for hematology tests. This is because it contains an anticoagulant called ethylenediaminetetraacetic acid (EDTA), which is specifically designed to prevent blood from clotting. EDTA works effectively in preserving the integrity and cellular components of blood samples, making it ideal for tests that evaluate blood cells, including complete blood counts (CBC), red and white blood cell counts, and hemoglobin levels. These hematology tests require whole blood, and the use of the lavender tube ensures that the samples remain in a suitable state for accurate analysis.

In contrast, other types of tests utilize different additives and collection tubes. Coagulation tests often require blue tubes containing citrate to assess clotting factors, while chemistry and serology tests usually make use of red or gold tubes that allow for serum separation following clotting. Understanding the specific applications of different tube colors and their additives is crucial for accurate laboratory results and patient management.