Processed sperm is stored long-term in liquid nitrogen at -196℃. Suitable for men planning to delay fatherhood, those who must undergo cancer treatment first, or those unable to be present on the day of egg retrieval.
The following is for reference only; suitability must be determined by a physician based on test results.
The overall process is as follows; actual milestones are adjusted according to test results and individual response.
Medical history, examination and fertility assessment to confirm suitability for freezing
Semen analysis, morphology assessment and necessary infectious disease screening
Sample provided in a dedicated collection room or using a sterile container
The laboratory performs washing, selection and equilibration with cryoprotectant
After controlled cooling the sample is placed into liquid nitrogen and enters the vapor-phase storage system
An independent numbered file is created, with double verification and periodic inventory checks
These are our specific requirements at the execution level, and they can also be inspected on site during a visit.
Two-person sign-off from sampling to storage, with barcode management to reduce error risk
Vapor-phase storage avoids cross-contamination risk; tanks monitored 24/7 for level and temperature
Each client has an independent number and storage position, with traceable records
Motility is assessed after thawing to provide a basis for subsequent ICSI use
Theoretically it can be stored long-term in a stable liquid-nitrogen environment; the actual duration is also subject to local regulations and the storage agreement, and the center confirms renewal intent with you annually.
Freezing and thawing cause some loss of sperm motility, so ICSI is usually used after thawing.
Abstinence of 2–7 days is required before sampling; avoid staying up late, alcohol and high-temperature environments. Follow your physician's instructions.
The content of this site does not constitute medical advice. Assisted reproduction offers no guaranteed outcome; the specific plan is subject to in-person assessment by a licensed physician.
Fertilization and embryo culture are completed in vitro, with genetic testing before transfer to select chromosomally normal embryos. Protocols are jointly assessed by reproductive specialists in China and the U.S. throughout…
Mature oocytes are retrieved after ovulation induction and stored in liquid nitrogen following vitrification, preserving the possibility of thawing, fertilization and transfer later. Generally, the younger the woman, the better the egg quality. …
Chromosomes or genes of embryos are tested before transfer to help physicians select embryos suitable for transfer. It covers aneuploidy screening, monogenic disease testing and chromosomal structural rearrangement testing…
Send your test reports and we will provide a preliminary assessment and timing recommendations.