During urine sediment microscopy, which magnification sequence is recommended?

• A. Scan on 10x, examine on 40x, condenser down, low light
• B. Examine on 10x, scan on 40x, condenser up, bright light
• C. Scan on 4x, examine on 10x, condenser down, low light
• D. Scan on 100x, examine on 400x, condenser down, low light

Answer: (A)

Starting with a broad survey is essential in urine sediment microscopy: you scan the slide at low power to quickly locate areas containing cells, crystals, casts, or organisms, then switch to higher magnification to examine those findings in detail. Scanning on 10x provides a wide field of view, and then examining on 40x gives enough resolution to identify morphology without the complexity of oil immersion. Keeping the condenser down and using lower light during this process enhances contrast and reduces glare, helping you see subtle features without washing them out. The other options push you to either use too high a magnification for the initial survey, or rely on magnifications not practical for quick screening, or require lighting and condenser adjustments that don’t optimize visibility for a routine urine sediment exam.