This test measures erythropoietin, a hormone produced by the kidneys that stimulates red blood cell production in the bone marrow.
Diagnostic Value: Abnormal EPO levels help determine whether anemia is caused by kidney disease, bone marrow failure, or other conditions.
Clinical Significance: Low EPO suggests impaired kidney function, while high levels may occur in chronic hypoxia or certain tumors.
Symptom Correlation: Patients may experience fatigue or shortness of breath due to low red blood cell count.
The EPO test helps identify whether anemia is driven by hormonal or bone marrow dysfunction.