Methemalbumin (MHA) is analbumin complex consisting of albumin and heme.[1][2]
This complex gives brown color toplasma and occurs inhemolytic andhemorrhagic disorders.
Its presence in plasma is used to differentiate between hemorrhagic andedematouspancreatitis.
TheSchumm test is used to differentiate intravascular haemolysis from extravascular haemolysis, as inhaemolytic anaemias. A positive result is indicative of intravascular haemolysis.