What type of tests are typically performed with a green top tube?

The green top tube is primarily used for chemistry tests because it contains heparin, an anticoagulant that prevents blood from clotting. This allows for the analysis of various biochemical components in the plasma, which is crucial for accurate results in tests that measure substances such as glucose, electrolytes, enzymes, and other metabolites.

The use of heparin is particularly advantageous for specific chemistry tests where the plasma sample is a necessity, as it preserves the integrity of the sample without producing artifacts that could affect results. This is why the green top tube is favored in clinical settings for a range of chemistry tests.