The specimen of choice for detecting urinary tract mycobacterial disease is

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In the case of urinary tuberculosis, definitive diagnosis requires recovery of acid-fast bacilli from the urine. Early morning voided urine specimens in sterile containers should be submitted daily for at least 3 days. The procedure for collection is the same as that used to collect a clean-catch midstream urine specimen for routine culture. Twenty-four-hour urine specimens are undesirable because of excessive dilution, higher contamination, and difficulty in concentrating.

The Specimen of Choice for Detecting Urinary Tract Mycobacterial Disease