Erythropoietin

Erythropoietin is a hormone produced in the kidneys that stimulates the production of red blood cells in the bone marrow. At IntroLab, the erythropoietin test measures the level of this hormone in the blood. Our laboratory in Belgrade offers this test at an affordable price. Don’t wait for your condition to worsen to get tested.

This test is crucial for identifying the cause of anemia, especially when kidney disease is suspected. It is also useful for evaluating patients with an elevated red blood cell count, a condition known as polycythemia.

About erythropoietin

Erythropoietin (EPO) is a glycoprotein hormone crucial for stimulating the production of red blood cells in the bone marrow. A deficiency in EPO can lead to severe anemia, making it an essential part of anemia blood tests.

Most EPO is synthesized in the kidneys (over 90%), with a smaller portion produced in the liver (less than 10%). EPO is eliminated from the bloodstream by binding to receptors on erythroid precursor cells in the bone marrow, stimulating their growth and maturation. EPO also promotes hemoglobin synthesis. In conditions of anemia and hypoxia, EPO levels in the blood can rise dramatically.

EPO levels in the blood can classify anemia into two categories: primary and secondary.

• Primary Anemias: In these conditions, EPO levels increase to restore normal red blood cell production. This includes anemia caused by iron deficiency, reduced kidney perfusion (e.g., due to blood loss), and hemoglobinopathies where hemoglobin has an increased affinity for oxygen. The rate of EPO production rises exponentially as available oxygen decreases.
• Secondary Anemias: These can occur with inflammatory processes, rheumatoid arthritis, malignant tumors, and chronic kidney diseases. Reduced EPO production can be at least partially responsible for secondary anemias.

When is erythropoietin testing indicated?

Indications for measuring erythropoietin levels include:

• Diagnosing and monitoring anemia, particularly in patients with low red blood cell counts.
• Evaluating kidney function and identifying potential causes of anemia in patients with chronic kidney disease.
• Monitoring the response to erythropoietin therapy in patients being treated for anemia, such as those on hemodialysis or undergoing chemotherapy.
• Assessing factors that influence erythropoietin production, such as hypoxia, liver diseases, and endocrine disorders.
• Evaluating the risk of anemia in patients undergoing surgery or those with severe injuries.

It is important to note that these are just some of the reasons for testing erythropoietin levels, and each case may require individual assessment by a physician.