What is a poly blood test?

A poly blood test, often referred to as a polycythemia test, measures the levels of red blood cells, hemoglobin, and hematocrit in the blood to diagnose polycythemia vera or other conditions that cause an increase in red blood cell mass. This test helps assess the body's oxygen-carrying capacity and can indicate issues such as dehydration, Heart disease, or lung disease. Elevated levels may require further investigation to determine the underlying cause and appropriate treatment.