List of medical abbreviations: U

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Abbreviation Meaning
UOSM urine osmolality
UA urinalysis
unstable angina
UBT urea breath test
UC ulcerative colitis
UCHD usual childhood diseases (see list of childhood diseases)
UCTD Undifferentiated connective tissue disease
UD as directed (from Latin ut dictum)
UDS urine drug screening
UE upper extremity
U&E urea and electrolytes (blood test) (for sodium and potassium, and often creatinine)
UIP usual interstitial pneumonitis
UGI upper gastrointestinal
ULN upper limit of normal
UOP urinary output
Ung ointment (from Latin unguentum)
Unk unknown
UPJ ureteropelvic junction (see pyeloplasty)
URA unilateral renal agenesis
URI upper respiratory infection
URTI upper respiratory tract infection
US ultrasonogram
USG ultrasonogram
USO unilateral salpingo-oophorectomy
USP United States Pharmacopeia
USR unheated serum reagin
USS ultrasound scan
UTI urinary tract infection
UUS upper uterine segment
UVAL ultraviolet argon laser