Vörösvértestszám

Vörösvértestszám, also known as red blood cell count or erythrocyte count, is a laboratory test that measures the number of red blood cells in a volume of blood. Red blood cells, or erythrocytes, are the most common type of blood cell and are responsible for transporting oxygen from the lungs to the body's tissues and carrying carbon dioxide back to the lungs to be exhaled. This count is a crucial component of a complete blood count (CBC).

The vörösvértestszám is typically determined using an automated hematology analyzer, which counts the cells in a sample of blood. The results are usually expressed in millions of cells per microliter (µL) or per cubic millimeter (mm³). Normal ranges for vörösvértestszám vary slightly between laboratories and depend on factors such as age, sex, and altitude. Generally, men have a higher red blood cell count than women.

An abnormally high vörösvértestszám, known as polycythemia or erythrocytosis, can indicate conditions like dehydration, lung disease, or certain bone marrow disorders. Conversely, a low vörösvértestszám, called anemia, suggests a reduced oxygen-carrying capacity of the blood and can be caused by iron deficiency, vitamin B12 deficiency, chronic diseases, or blood loss. Monitoring vörösvértestszám is important for diagnosing and managing a wide range of health conditions.