AIHA - Slide 2

Instance of cold agglutination secondary to COVID-19 infection. This patient had intravascular haemolysis (haptoglobin <

0.1 g/L

and the direct antiglobulin test (DAT) was positive for anti-C3 and negative for anti-IgG, consistent with an IgM autoantibody.

XN Scatterplots

wdf

wnr

rbc

plt

plto

ret

Lymphocytes

Monocytes

Neutrophils & Basophils

Eosinophils

Leukocytes

Basophils

NRBCs

Debris

Erythrocytes

Reticulocytes

RBC fragments

Platelets

immature platelets

Reference

Peripheral blood