Mar 7, 2024 · Hemoglobin (abbreviated Hgb or Hb) is the protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the …

Hemoglobin is routinely measured as part of a routine blood test termed blood count (CBC). A complete blood count is one of the most common tests doctors order for a patient. It is done on automated …

Dec 12, 2025 · Normal hemoglobin levels differ for men and women, with adult males having 13.8 to 17.2 g/dL and females having 12.1 to 15.1 g/dL. High hemoglobin levels can be caused by …

Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to the other tissues of the body, where it releases the oxygen to enable aerobic respiration which powers an animal's …

Jul 12, 2023 · Hemoglobin is a component of your blood that delivers oxygen throughout your body. If your hemoglobin levels are low, your cells might not get enough oxygen. As a result, you might …

Dec 17, 2025 · Normal hemoglobin levels by age and gender, what’s healthy, and when low or high hemoglobin levels need medical attention. Learn when to see a doctor.

Apr 12, 2024 · Hemoglobin carries oxygen to the body's organs and tissues when you breathe in. Then it carries the waste gas carbon dioxide back to the lungs to be breathed out. If a hemoglobin test …

Hemoglobin serves the important role of carrying oxygen and carbon dioxide through your blood. Hemoglobin is carried by your red blood cells. If your hemoglobin is too low, you may not be able to …

Nov 14, 2025 · Learn about the oxygen-transporting function and molecular structure of the protein hemoglobin Hemoglobin is an example of a globular protein. Learn how hemoglobin proteins in the …

Hemoglobin is an iron-rich protein in your red blood cells. It carries oxygen from your lungs to the rest of your body. Your cells need oxygen to grow, reproduce, and make energy for you to function. Your …