What color tube top is used to collect blood for coagulation studies?

Name: What color tube top is used to collect blood for coagulation studies?
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Question

Quizplus · Accepted Answer

Light blue tubes, which contain sodium citrate, are used to collect blood for coagulation studies. The citrate in the tube binds with calcium ions in the blood, inhibiting coagulation so that the blood can be processed for testing purposes. Red, gray, and green tubes are used for other types of blood tests.

What Color Tube Top Is Used to Collect Blood for Coagulation