Blood count
Haemoglobin Erythrocyte count Corpuscular volume Corpuscular haemoglobin Reticulocyte count
Lactate dehydrogenase
Liver panel
Elevated bilirubin supports haemolysis. The hyperbilirubinaemia is conjugated.
Haptoglobin
Direct Coombs/antiglobulin test
IgG positive = warm disease C3d positive = cold disease