Clinical Laboratory Hematology 3rd Edition by Shirlyn McKenzie, Lynne Williams

Exercise 22

Garcia is a 68-year-old man who is being evaluated for kidney disease. His blood urea nitrogen (BUN) is 15 mmol/L (reference interval = 2.1-7.1 mmol/L). His hemoglobin concentration was found to be 109 g/L. Which statement is the best possible explanation for his hemoglobin concentration? (Objectives 5,7,8)
A) He most likely has experienced severe blood loss (hemorrhage) as result of kidney disease.
B) His kidney disease is causing decreases in erythropoietin, red cell survival, iron, and folate, resulting in anemia.
C) Mr. Garcia's hemoglobin concentration is normal for a male his age and is unrelated to kidney disease.
D) Nothing in the clinical or laboratory data presented explains the hemoglobin and additional testing is required.