Abbreviation

• HAA- hepatitis B surface antigen
• HAV- hepatitis A Virus
• HCG- human chorionic gonadtropin
• HCT- hemotocrit
• HO2- high intensity lipoprotein
• HIv- human immunideficiency virus
• HLA- histrocompatability locus antigen
• HPI- history of present illness
• HS- at bedtime
• IBS- irritable power syndrome