Which of the following samples would be expected to be free of microorganisms unless an infection is present?

Question

Quizplus · Accepted Answer

Blood is a sterile body fluid unless an infection is present, so it is expected to be free of microorganisms under normal circumstances. The other samples listed are expected to contain microorganisms, as they are taken from areas of the body that normally harbor bacteria or other microbes.

Which of the Following Samples Would Be Expected to Be