Table 2. Results of assays related to workup in procoagulant state.

aPTT: activated partial thromboplastin time, dsDNA ELISA: double-stranded DNA enzyme-linked immunoassay, PNH: paroxysmal nocturnal hemoglobinuria, LMWH: low-molecular-weight heparin

Assay	Result
aPTT (aPTT ratio)	37.1 (25-36.5) (1.3)
Beta-2-glycoprotein antibodies	5.1 U/mL (0-6.99 U/mL)
IgG anticardiolipin antibodies	Low positive (exact result not available)
dsDNA ELISA	44 IU/mL (0-9.99 IU/mL)
DNA Crithidia assay (confirmatory test)	Negative
Dilute Russell viper venom test (DRVVT)	1.41 (0-1.26)
PNH screen	Negative
JAK2 V617F mutation	Not detected
Antithrombin III level	1.01 IU/mL (0.82-1.18 IU/mL)
Peak anti-Xa level (while on LMWH)	0.41 IU/mL (0.5-1 IU/mL)