American Medical Technologist (AMT) Practice Exam

Question: 1 / 400

What type of blood collection tube is typically used for clotting tests?

Red top tube

Blue top tube

The blue top tube is specifically designed for coagulation tests due to its composition and the type of additive it contains. This tube typically contains sodium citrate, an anticoagulant that binds calcium ions in the blood. By preventing the blood from clotting, this additive allows for accurate measurement of clotting factors when performing tests such as prothrombin time (PT) and activated partial thromboplastin time (aPTT).

In contrast, the red top tube does not contain any additives and allows the blood to clot, making it suitable for serum tests rather than clotting studies. The green top tube contains heparin, which is an anticoagulant for different types of tests, primarily chemistry assays rather than coagulation tests. The lavender top tube contains EDTA, which is also an anticoagulant but is mainly used for complete blood counts and other tests that require whole blood or plasma, rather than specifically for coagulation testing.

Get further explanation with Examzify DeepDiveBeta

Green top tube

Lavender top tube

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy