ABO

Blood types A, B, O

AHF

Antihemophilic factor

APHON

Association of Pediatric Hematology/Oncology Nurses

aPTT

Activated partial thromboplastin time (aPTT or PTT)

HIT

Heparin-induced thrombocytopenia

HITT

Heparin-induced thrombocytopenia with thrombosis

WBC

White blood cell