Laboratory methods

Sperm Viability Assessment: Blom's Eosin-Nigrosin Stain

Methodology for assessing sperm viability using Blom's eosin-nigrosin stain in a spermogram: differentiating live and dead cells.

Ejaculate smear: live and dead spermatozoa stained by Blom's method
Ejaculate smear: live and dead spermatozoa stained by Blom’s method

🔬Sperm Viability Assessment ✅Staining with eosin-nigrosin (Blom’s method). White spermatozoa are alive (membrane intact); spermatozoa stained pink are dead (membrane damaged and permeable).