In-Depth Look at Sperm Selection Technology: The Key to Success in ICSI
High-quality sperm selection is not just about “quantity” or “motility.” Modern technologies such as MACS Sperm, Microfluidics, and IMSI allow us to select sperm with intact DNA and internal structures to increase fertilization rates, reduce miscarriage risks, and improve the chances of success in IVF/ICSI procedures.
Why is “Sperm Selection” More Important Than You Think?
In infertility treatment, the male partner is often overlooked if the initial semen analysis is normal. However, “sperm that appear healthy externally may have DNA fragmentation,” which is a major cause of poor embryo quality, halted development, or failed embryo implantation.
Who Should Use Advanced Sperm Selection Technology?
- Couples who have experienced multiple IVF/ICSI failures
- Men with severe abnormal sperm conditions (Teratozoospermia)
- Men over 40 years old
- Couples with a history of recurrent miscarriage with unknown causes
Popular Sperm Selection Technologies Today
To help you decide more easily, here is a comparison table of technologies used in the Embryology Lab.
| Technology | Working Principle | Suitable For |
|---|---|---|
| MACS Sperm | Uses magnets to separate sperm undergoing apoptosis (dying sperm) | Those with high DNA fragmentation levels |
| Microfluidics | Simulates the uterine pathway, allowing sperm to swim through a natural filter | Those who want intact sperm and reduced free radicals |
| IMSI | Uses a microscope with 6,000x magnification to examine sperm structure | Those with a high number of abnormally shaped sperm |
In-Depth: MACS Sperm vs. Microfluidics
1. MACS Sperm (Magnetic-Activated Cell Sorting)
This technology uses “magnetic particles” that bind to proteins on the surface of deteriorating sperm, even if they are still motile.
• Highlight: Reduces miscarriage rates and helps obtain embryos with better chromosomal quality.
2. Microfluidic Sperm Selection (Sperm Chip)
This method prepares and filters sperm without chemicals or centrifugation, which can damage sperm.
• Highlight: Obtains the “fittest” sperm and reduces Reactive Oxygen Species (ROS) that damage sperm.
Preparation Before Sperm Collection
To maximize the effectiveness of these technologies, men should take care of themselves as follows:
- Abstain from ejaculation for at least 2-3 days but not more than 7 days before the collection day
- Avoid heat exposure, sauna, or placing a laptop on the lap, as heat damages sperm production
- Supplements such as Zinc, L-Carnitine, Vitamin C, Folic acid, and Coenzyme Q10 can help improve sperm quality initially
Frequently Asked Questions About Sperm Selection
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- Question: Does sperm selection guarantee 100% implantation success?
Answer: While it significantly increases the chances, success also depends on egg quality and uterine conditions.
- Question: Does sperm selection guarantee 100% implantation success?
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- Question: Is advanced sperm selection expensive?
Answer: Generally, there is an additional cost on top of the regular ICSI package, depending on the technology chosen.
- Question: Is advanced sperm selection expensive?
