Anatoli Silajev Comments 0 24th January 2012
ANAEMIA / level of haemoglobin in blood

Anaemia is a decrease in the total amount of haemoglobin in the blood. And the reduced level of haemoglobin per unit of volume of blood characterises. But, it does not regard acute blood losses. In most cases, anaemia also features a lower level of erythrocytes.

Level of haemoglobin

However, the content of erythrocytes may remain healthy, with a low level of haemoglobin. It occurs in the case of iron deficiency, thalassemia and abnormal porphyrin synthesis. As to thalassemia, then it may even be higher than average.

Blood losses

In acute blood loss (massive haemorrhage or severe haemolysis), the level of haemoglobin and erythrocytes may remain normal during the first hours. However, some other apparent symptoms of anaemia appear, like pale integuments, conjunctivas, collapsed veins, palpitation and dyspnoea during physical activity, and a fall in the arterial pressure (in some severe cases).


Besides, scientists consider anaemia as one of the symptoms of some systemic diseases. Therefore, anaemia is always secondary. Alongside frequent and easily diagnosed forms of anaemia, rare anaemic syndromes also require sophisticated diagnostics techniques.