Rapid Sperm Vitality Stain Kit
The Rapid Sperm Vitality Stain Kit uses a premixed single-step eosin-nigrosin solution to quickly differentiate between live and dead spermatozoa based on cell membrane integrity.
- Premixed Single Solution: Combines eosin Y and nigrosin into a ready-to-use, one-step reagent that eliminates multi-step dye preparation.
- Dye-Exclusion Mechanism: Utilizes membrane permeability principles where intact membranes reject the stain and damaged membranes allow entry.
- Contrasting Background: Nigrosin provides a dark, uniform optical background to enhance visual clarity.
- Standard Bright-Field Compatibility: Requires only standard light microscopy (oil immersion or bright-field) rather than specialized phase-contrast optics.
- Sample Mixing: A small volume of liquefied semen is gently mixed directly with the premixed eosin-nigrosin stain and incubated for about 30 seconds.
- Smear Preparation: A small drop of the stained mixture is smeared across a clean glass slide and allowed to air-dry completely.
- Dye Uptake: Non-viable (dead) sperm with damaged plasma membranes absorb the eosin Y and appear red or dark pink.
- Exclusion: Viable (live) sperm with intact membranes resist dye penetration and remain unstained against the dark nigrosin background, appearing white or light pink.
- Evaluation: Analysts count at least 200 spermatozoa under magnification to calculate the precise percentage of live cells.
- Fast and Efficient: Delivers rapid results within seconds of incubation, streamlining routine laboratory workflows.
- High Accuracy: Accurately distinguishes live immotile sperm from dead immotile cells in poor-motility samples.
- Cost-Effective: Reduces reagent handling errors, preparation time, and material waste with a long ambient shelf-life.
- User-Friendly Protocol: Simplifies diagnostic procedures for male infertility assessments in standard clinical and research laboratories.
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