What condition is characterized by hemoglobin concentration of blood being below accepted values?

The condition characterized by hemoglobin concentration of blood being below accepted values is anemia. Anemia occurs when there is a deficiency in the number of red blood cells or the amount of hemoglobin they contain, which is essential for oxygen transport throughout the body. This can lead to symptoms such as fatigue, weakness, and pallor, as the body's tissues may not receive adequate oxygen.

Anemia has various causes, including nutritional deficiencies (like iron, vitamin B12, or folate), chronic diseases, or genetic disorders. It is important to assess hemoglobin levels in patients to determine the presence and severity of anemia, as effective management and treatment strategies can be implemented based on the underlying cause.

The other conditions listed, such as hypertension, leukemia, and cardiomyopathy, do not primarily involve low hemoglobin levels as a defining characteristic. Hypertension relates to elevated blood pressure. Leukemia, a form of cancer affecting blood cells, could involve anemia among other symptoms, but it is not defined by low hemoglobin levels alone. Cardiomyopathy refers to diseases of the heart muscle that can lead to heart failure but is unrelated to hemoglobin concentration.