UA is frequently performed in the workup of possible acute appendicitis. Abnormal UA results, excluding proteinuria, are found in 19 to 40 percent of patients with acute appendicitis.12!3 Abnormalities include pyuria, hematuria, and bacteriuria, possibly related to the extension of appendiceal inflammation to the ureter. The presence of greater than 20 WBC/hpf (without epithelial cells) in the urine should elevate consideration of urinary tract pathology in the differential diagnosis. 12
A pregnancy test is an essential component of the workup of abdominal pain in females of childbearing age. It must be clearly stated that pregnant patients and nonpregnant patients have an equal likelihood of getting appendicitis. 14
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