Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 22

As supervisor of the urinalysis section, you are reviewing results. State why or why not each of the following results would concern you.

a. The presence of waxy casts and a negative protein in urine from a 6–month-old girl

b. Increased transitional epithelial cells in a specimen obtained following cystoscopy

c. Tyrosine crystals in a specimen with a negative bilirubin test result

d. Cystine crystals in a specimen from a patient diagnosed with gout

e. Cholesterol crystals in urine with a specific gravity greater than 1.040

f. Trichomonas vaginalis in a male urine specimen

g. Amorphous urates and calcium carbonate crystals in a specimen with a pH of 7.0

Step 1 of 7

a.

, waxy casts are not related with negative urine protein. The presence of waxy casts is probably due to an artifact. The fiber present in clothes and diapers are artifacts, which are mistaken for casts.