what is hemoglobin for women body cell and body of temperature measure Hawk and
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Methods for the measurement of hemoglobin (Hb) were first developed well over a century ago, so that hemoglobin was among the first diagnostic blood tests available to clinicians during the first decades of the 20th century when laboratory medicine was in its infancy.
Today it is the most frequently requested blood test and is performed not only in the hospital laboratory but in a variety of healthcare settings, by a range of healthcare personnel, using technology of diverse sophistication.
In an intensive care and emergency room setting, for example, hemoglobin is measured by nursing staff using technology incorporated into blood gas analyzers.
The focus of this article is methods currently used to measure the blood concentration of hemoglobin (ctHb) both in the laboratory and beyond, but it begins with a brief consideration of the structure and function of hemoglobin and the clinical utility of ctHb measurement.
Normal cell function depends on a continuous supply of oxygen. As oxygen is consumed during cell metabolism, carbon dioxide is produced.
A principle function of blood is the delivery of oxygen (O2), present in inspired air, from the lungs to every cell in the body and delivery of carbon dioxide (CO2) from cells to the lungs, for elimination from the body in expired air.
These vital gas transport functions are dependent on the protein hemoglobin contained in erythrocytes (red blood cells). Each of the 5 × 1010 erythrocytes normally present in 1 mL of blood contains around 280 million hemoglobin molecules.