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Oct 18, 2025, 09:11

Rahul Manoj: Sperm Preparation Techniques for IVF and ICSI

Rahul Manoj, Senior Embryologist at Best Life Fertility Center, shared a post on LinkedIn:

“Day 12 – Sperm Preparation Techniques for IVF and ICSI

Efficient sperm preparation is crucial for isolating motile, morphologically normal, and DNA-intact spermatozoa — essential for fertilization success in both IVF and ICSI.
The choice of technique depends on semen parameters and the clinical scenario.

Major Techniques:

Swim-Up Method/direct layering
• Relies on sperm motility for separation.
• Best suited for normozoospermic samples.
Density Gradient Centrifugation (DGC)
• Separates sperm based on density and morphology.
• Effective for samples with debris or low motility.
Simple Wash Method
• Removes seminal plasma quickly.
• Common in donor sample processing.
Microfluidic Sperm Sorting
• Mimics natural sperm selection in the female tract.
• Reduces oxidative stress and improves DNA integrity.

Quality Control Considerations:

Maintain sperm viability and motility throughout the procedure.

Control centrifugation force, temperature, and pH.

Routinely check media osmolality and sterility.
lets Discuss:

> Between Density Gradient Centrifugation and Microfluidic Sperm Sorting, which do you believe offers better DNA integrity and improved blastocyst development potential — and why?

The image is taken from the paper below and also refer to this paper for more information on semen washing techniques.”

Rahul Manoj: Sperm Preparation Techniques for IVF and ICSI