Which of the Following Statements Concerning the Laboratory Diagnosis of Urinary

question 32

Multiple Choice

Which of the following statements concerning the laboratory diagnosis of urinary tract infections is TRUE?

• A)All urine samples contain some microorganisms because the bladder has a normal microbiota.
• B)A midstream specimen of urine (MSU)is usually the most appropriate specimen to collect.
• C)Urine is toxic for all microorganisms and thus should not be allowed to stand after collection.
• D)Any bacteria found in a urine specimen is indicative of infection.
• E)Contamination of a urine specimen is usually by microorganisms from the air.

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