Which urinary sediment can indicate the presence of live sperm cells?

The presence of spermatozoa in urinary sediment specifically indicates the presence of live sperm cells. These cells can be detected in urine, particularly in cases where there may be semen contamination due to ejaculation prior to urination or when urinary incontinence occurs in males.

Understanding the components of urinary sediment gives insight into what various structures signify. While crystals, fibers, and artifacts can be present in urinary sediment, they do not relate to reproductive material. Crystals can indicate various metabolic issues, fibers may derive from clothing or environmental sources, and artifacts refer to errors or non-biological elements present in the sample. Therefore, spermatozoa distinctly indicates live sperm cells, making it the correct answer in this context.