Table 2 Examinations for differential diagnosis of primary and secondary thrombotic microangiopathy

 ADAMTS13

61.2%

Anti-cardiolipin antibody

12 U/mL

 ADAMTS13 inhibitor

< 0.5 BU/mL

Lupus anticoagulant

1.2

 Anti-lipopolysaccharide antibody

Negative

CMV antigenemia (C10/11)

Negative

 Anti-dsDNA antibody

< 10 U/mL

CMV IgM

0.27 (negative)

 Anti-Sm antibody

< 2.0 U/mL

EBV VCA IgG

40×

 Anti-SS-A antibody

< 1.0 U/mL

EBV VCA IgM

< 10×

 Anti-SS-B antibody

< 1.0 U/mL

EBV EBNA

10×

 Anti-RNP antibody

< 2.0 U/mL

Influenza A virus

< 4×

 Anti-centromere antibody

< 5.0

Influenza B virus

< 4×

 Anti-Scl-70 antibody

< 1.0 U/mL

HIV-1/HIV-2 antibodies

Negative

 Anti-Jo-1 antibody

< 1.0 U/mL

HIV-1 p24 antigen

Negative

 MPO-ANCA

< 1.0 U/mL

VZV IgG

28.8 (positive)

 PR3-ANCA

< 1.0 U/mL

VZV IgM

0.23 (negative)

 Anti-GBM antibody

< 2.0 U/mL

Parvovirus B19 IgM

< 0.8

 Shiga toxin

Negative