We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Ellen Airhart Ellen Airhart wrote about emergency preparedness and sanitation.

THE blood group of a person is dependent upon the presence in his erythrocytes of specific antigens. These antigens, most easily demonstrated by agglutination methods, are usually referrecf to as ...

A hemoglobin test measures the amount of hemoglobin in red blood cells, which is essential for transporting oxygen throughout the body and carbon dioxide back to the lungs. Normal hemoglobin levels ...