Which specimen type is typically used for routine screening when a rapid result is needed, and why?

Which specimen type is typically used for routine screening when a rapid result is needed, and why?

• A. Random spot urine specimen; convenient and adequate for most chemical tests
• B. First-morning void; most concentrated
• C. Midstream clean-catch; best for culture
• D. Catheterized sample; reduces contamination

Answer: (A)