A patient with anemia is found to have a low level of erythropoietin, a hormone produced by the kidneys. Which of the following conditions is most likely responsible for this finding?

A Chronic kidney disease ✓
B Hypothyroidism
C Adrenal insufficiency
D Pituitary gland tumor

Explanation

Erythropoietin is produced by the kidneys, and chronic kidney disease can lead to a decrease in its production, resulting in anemia.

Source

Harrison's Principles of Internal Medicine
Hematology Hematology: Anemia Hematology: Anemia Hard MEDICAL Confidence: high