Teen with Rare Condition Attends Prom After Medical Breakthrough

Hemoglobin is a crucial protein found in red blood cells that carries oxygen from the lungs to tissues throughout the body and returns carbon dioxide back to the lungs for exhalation. Testing hemoglobin levels is an essential component of a complete blood count, one of the most common laboratory tests performed in medical practice. This test helps healthcare providers assess overall health, diagnose various conditions, and monitor ongoing treatments.

Normal hemoglobin levels vary by age and gender. For adult men, the typical range is approximately 13.5 to 17.5 grams per deciliter, while for adult women, it ranges from about 12.0 to 15.5 grams per deciliter. Children and pregnant women have different reference ranges. When hemoglobin levels fall below normal, the condition is called anemia, which can cause fatigue, weakness, pale skin, shortness of breath, and dizziness. Anemia may result from various factors including iron deficiency, vitamin deficiencies, chronic diseases, blood loss, or inherited blood disorders.

Elevated hemoglobin levels, though less common than anemia, can also indicate health problems. High hemoglobin may occur in people living at high altitudes as the body adapts to lower oxygen levels, or it may signal dehydration, lung disease, heart disease, or certain blood disorders such as polycythemia vera. Smoking can also contribute to higher hemoglobin levels as the body compensates for reduced oxygen delivery caused by carbon monoxide exposure.

The hemoglobin test is performed using a simple blood sample, typically drawn from a vein in the arm. No special preparation is usually required, though your healthcare provider may ask you to fast if additional tests are being conducted simultaneously. Results are generally available within hours to a day. If your hemoglobin levels are abnormal, your healthcare provider may order additional tests to determine the underlying cause and develop an appropriate treatment plan. Regular monitoring of hemoglobin levels is particularly important for people with chronic conditions, those undergoing certain medical treatments, and individuals at risk for blood disorders.