The nurse is performing an assessment and finds that the client has a non-tarry and black stool. Which of the following subjective data should the nurse document as normal findings consistent with non-tarry black stool?

The correct answer is C because eating red meat can cause the stool to appear non-tarry and black due to the breakdown of the heme in the meat during digestion. This is known as pseudomelena. Choice A, taking an iron supplement, typically results in tarry stools. Choice B, dry heaves, is not directly related to stool color. Choice D, loss of appetite, is also unrelated to stool color changes. It is essential for the nurse to document this finding as normal to prevent unnecessary concern or interventions.