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A normal hemoglobin count is defined as 13.5 to 17.5 grams per deciliter of blood for men and 12.0 to 15.5 grams per deciliter of blood for women, states Mayo Clinic. The levels may vary slightly between medical practices. In children, normal ranges differ with age and gender.


A low hemoglobin count means that a patient has less of a protein found in red blood cells than what is considered normal in a blood test, according to Mayo Clinic. A low hemoglobin count is a common finding and may not indicate a serious condition.


Dangerously low hemoglobin levels that require transfusion are 7 grams per deciliter for ICU patients and 8 milligrams per deciliter for most other patients, according to U.S. News. Low hemoglobin is anything below 13.5 grams per deciliter for men, and 12 grams per deciliter for women, according to


InnovateUs states that the main function of hemoglobin is transporting oxygen from the lungs to other parts of the body. It is an important chemical in red blood cells that carries oxygen, and performs different effect modulation and gas transport duties.


A high hemoglobin count can indicate serious medical conditions such as kidney failure, liver cancer and heart failure, according to Mayo Clinic. High hemoglobin can also result from residing in high-altitude environments. High hemoglobin counts are often expected by physicians when testing for cert


Hemoglobin is an iron-containing protein used in the transport of oxygen. It is carried in the blood of most animals. In its oxygenated state, it is bright red and is responsible for the color of blood.


Nine is a low hemoglobin count, according to Mayo Clinic. In women, a low count is defined as less than 12 grams of hemoglobin per deciliter, while a low reading for men is under 13.5 grams per deciliter. For children, low counts are based on age and sex.


A dangerous hemoglobin level is hemoglobin greater than 18.5 g/dL in men and 16.5 g/dL in women, Medscape states. This is known as polycythemia.


An elevated hemoglobin count may impair circulation and disrupt the adequate delivery of oxygen to the tissues, possibly leading to peripheral cyanosis and impaired mental function due to poor cerebral circulation, according to SteadyHealth. Elevated hemoglobin also increases the risk of thrombo-emb


Hemoglobin is a red protein found in the red blood cells of vertebrates that carries oxygen from the lungs to body tissues. Hemoglobin also carries carbon dioxide from body tissues back to the lungs.