Internal medicine

ARDS

Lupus anticoagulant

Serology

Gastroenterology

Anti-nuclear antibody

Antibody

Autoantibody

Immunology

Lung

Antiphospholipid syndrome

Medicine

Annals of the Rheumatic Diseases

Reports of severe COVID-19 being associated with thrombosis, antiphospholipid antibodies (APLA), and antiphospholipid syndrome have yielded disparate conclusions. Studies comparing patients with COVID-19 with contemporaneous controls of similar severity are lacking.

Anticardiolipin and other antiphospholipid antibodies in critically ill COVID-19 positive and negative patients