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Greek. haima - blood, Latin ← Greek lusis, - loosening

The rupture of erythrocytes (red blood cells). The meaning can also be extended to include destruction of erythrocytes (red blood cells). Common causes are:

In the context of an infective illness with in vivo haemolysis consider:

See also Acute haemolysis

Haemolysed Blood Samples

Haemolysis of erythrocytes in blood samples by venepuncture taken for biochemical analysis results in release of potassium and several other enzymes (particular 'liver' enzymes) into serum or plasma, leading to falsely elevated levels of analytes.

The mechanism behind haemolysed venepuncture blood is unclear, but several factors have been implicated:[1][2]