Final answer:
The presence of white blood cells in a urine sample likely indicates a voided sample and suggests a possible urinary tract infection.
Step-by-step explanation:
If white blood cells (leukocytes) are found upon microscopic examination of urine sediment in a urine sample, it likely indicates that the sample is a voided sample and may suggest a urinary tract infection (UTI). Leukocyte esterase, an enzyme released by leukocytes, can also provide indirect evidence of a UTI if detected in the urine. Other cellular elements such as red blood cells (RBCs), epithelial cells, bacteria, casts, and crystals can also be found in the urine and may indicate other conditions, such as kidney stones, trauma, or various infections