The Nurse Draws Blood for a Patient with Coagulation Studies

The nurse draws blood for a patient with coagulation studies ordered, including protein C.Which of the following actions could result in erroneous results?

A) The tourniquet is left on for longer than 1 minute prior to specimen collection.
B) The nurse draws blood from the arm that does not have a running IV.
C) The nurse draws blood from a patient who has already eaten breakfast.
D) Additional lab specimens for complete blood count and electrolyte panel are drawn prior to collection of the coagulation studies.

Correct Answer:

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