If the predominant formed element in a urine sediment indicates a normal sample, which option best describes the sample?

• A. Glomerulonephritis
• B. Improperly collected specimen
• C. Pyelonephritis
• D. Normal sample

Answer: (D)

In urine sediment analysis, the types and amounts of formed elements reflect the state of the urinary tract. If the predominant element seen in the sediment corresponds to what’s expected for normal urine, the sample is considered normal. A normal sediment typically has very few cells and no pathologic findings—no significant red blood cells, white blood cells, bacteria, casts, or crystals.

If the sample were from a patient with glomerulonephritis, you’d expect abnormal findings such as dysmorphic or increased red blood cells and possibly casts or protein, not a normal sediment. Pyelonephritis would usually show an increase in white blood cells and bacteria. An improperly collected specimen often appears contaminated with squamous epithelial cells from the skin or others, not a truly normal sediment.

So, when the predominant formed element indicates a normal profile, the best description is that the sample is normal.