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This is a test to measure how much erythropoietin (EPO) you have in your blood. EPO is a hormone that your kidney makes to trigger your bone marrow to make red blood cells. A normal EPO level means that your body can make healthy red blood cells.
Healthy oxygen levels are linked to having enough red blood cells. For this reason, EPO levels usually rise when your body isn't getting enough oxygen.
You might have this test if other tests have shown that you have anemia and your healthcare provider wants to figure out what kind of anemia you have. He or she might also order this test to help find out whether your kidneys are making a normal amount of EPO. A level of EPO that’s higher than normal may mean you have a kidney tumor.
If you are a professional cyclist, long-distance runner, or other professional athlete, you may be asked to take this test. It's sometimes used to find out whether athletes have been violating anti-doping laws. EPO is used illegally by some athletes to improve their performance.
Because EPO plays a key role in the making of red blood cells, your healthcare provider may order other blood tests. These include a complete blood count, or CBC. Your provider may also order other tests for anemia. These could include tests for iron levels, total iron binding capacity level, ferrtin levels, and reticulocyte counts.
Many things may affect your lab test results, including the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your healthcare provider.
The normal range for EPO levels can vary from is 3.7 to 36 international units per liter (IU/L). Higher-than-normal levels may mean you have anemia. In severe cases of anemia, EPO levels in the blood may be a thousand times higher than normal.
Unusually low levels may be because of polycythemia vera. This is a bone marrow disorder that causes your body to make too many red blood cells. Low EPO levels may also mean you have kidney disease.
The test requires a blood sample, which is drawn through a needle from a vein in your arm.
Taking a blood sample with a needle carries risks that include bleeding, infection, bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight stinging sensation or pain. Afterward, the site may be slightly sore.
Ask your your healthcare provider about what might affect your results. Donating blood can raise the EPO level in your blood. Pregnancy and certain medicines can also affect this test.
You don't need to prepare for this test. But make sure your healthcare provider knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illicit drugs you may use.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.