Abstract:
The study (case control) aimed to measurement the mean levels of platelet Count, Prothombin time (PT), activated Thromboplastin time (APTT) and fibrinogen in patients with homozygous sickle cell disease (HBSS), sickle cell trait (HbAS) and normal controls (HbAA) . The study period from the May to Aug 2015,at Khartoum State in Sickle Cell Clinic of Gaffer Ibn Auf Children Specialized Hospital ........