Diagnosis of anaemia: old things rearranged.

Anaemia is one of the most leading causes of morbidity and mortality, as declared by the World Health Organisation. This syndrome is characterised by low haemoglobin levels and nonspecific clinical symptoms such as weakness, fatigue and dyspnoea. The symptoms are unspecific as the underlying causes are heterogeneous. Thus, good knowledge of the useful biomarkers and their correct assignment is needed to allow rapid and targeted diagnosis.