U

• u- unit
• U.G.I.B.- Upper Gastrointestinal Bleed
• USD- ultrasound
• U.S.P- United States Pharmacopiea
• U/A- urinalysis
• UGI- Upper Gastrointestinal
• UGIS- Upper Gastrointestinal Series
• URI- upper respiratory infection
• UTI- urinary tract infection