Erythropoietin (EPO) concentration in plasma

Why This Test Might Be Ordered

Your healthcare provider may order this test if you have symptoms like fatigue, shortness of breath, or pale skin, which could indicate low red blood cell counts. They might also order it to check kidney function, especially if you have chronic kidney disease or are on dialysis. Sometimes, it’s used to monitor treatment for conditions like anemia or certain cancers.

What to Expect Before the Test

No special preparation is usually needed. You may have a small needle inserted into a vein in your arm to draw a blood sample. If you’re on dialysis, your blood may be drawn during your treatment session. Avoid strenuous activity or eating for a short time before the test if instructed.

What to Expect During the Test

The blood sample is collected in a tube. The needle will be inserted, and you may feel a brief pinch. The process takes just a few minutes. The blood is then sent to a lab for testing.

What the Results Mean

Results are compared to a general reference range, but exact values can vary by lab. High levels might suggest kidney disease or certain cancers, while very low levels could indicate anemia or other blood disorders. Your provider will discuss these results with you in the context of your overall health.