

To screen for Down syndrome and other chromosomal disorders without risks of miscarriage. Fast! Convenient! Safe!
Know more about Chromosomal disordersUniversity Professors specialized in Pathology will provide support to your Obstetricians.
The Unique Professional Services We ProvideWe are highly regarded by users for our outstanding performance and high test accuracy for detecting the fetal chromosomal disorders.
Our convenient, fast and reliable servicesThe world-leading professional medical team from the University has revolutionized prenatal testing with the “T21” technologies.
Our TechnologiesOur genetic information is encoded in DNA, which is packaged as chromosomes in our cells. Human cells have 23 pairs of chromosomes (22 pairs of autosomes and one pair of sex chromosomes), giving a total of 46 per cell. Trisomy is one of the most common chromosomal abnormalities.
Chromosomal disorders mostly occur during the formation of a fertilized egg, and are random events. Every parent has a certain likelihood of bearing a baby with chromosomal disorders. Statistics showed that the chance of having a defected baby is positively correlated with the age of pregnancy. There is no proven cure for such defects. Therefore, having a fast and safe prenatal screening helps parents better prepare for their families.
Major chromosomal disorders:
safeT21expressTM adopts the latest DNA sequencing technologies.
safeT21expressTM is a high sensitivity genetics analysis service for the non-invasive prenatal screening of Down syndrome and other disorders. safeT21expressTM is a test that analyses such circulating cell-free DNA molecules with next-generation DNA sequencing technologies, and performs bioinformatics analysis. Genetic information from the unborn child can be obtained, which could include the screening results for:
University Professors specialized in Pathology will provide support to your Obstetricians to handle positive results or special cases
The test uses a non-invasive method with no risk of miscarriage
Reporting result in 3-5 working days after blood collection
Accuracy of trisomy detection over 99.9%
Only 10ml of maternal blood is required (fasting is not required)
Although the accuracy of invasive diagnostic tests (e.g. amniocentesis) are high, there are risks of miscarriage. On the other hand, traditional screening tests (e.g. OSCAR) are safe, but are less accurate.
safeT21expressTM opens up an opportunity for mothers to experience a prenatal test which is safe and >99.9% accurate.
Xcelom was built by a group of biotechnology enthusiasts who strive to make the world a better place. It was founded and is run by the most dedicated inventors, explorers and healthcare professionals who help create your future.
In 1997, Xcelom’s founder was the first to report the existence of cell-free fetal DNA in the blood of pregnant women. After years of dedicated research, methods for the non-invasive screening of fetal chromosomal aneuploidies, were successfully achieved. The clinical performances of the test approaches developed by the research team were subsequently validated and confirmed by a number of international research groups and this formed the basis for many of the non-invasive prenatal testing protocols adopted for clinical use worldwide today. Xcelom is the only licensee of the CUHK technologies in Hong Kong to provide the safeT21expressTM test.
News (External web links)
Xcelom is established based on the non-invasive prenatal testing technologies pioneered at CUHK. Xcelom is the exclusive licensee of this CUHK technology in Hong Kong.
With our technology leadership and technical centre at the Hong Kong Science Park, Xcelom now pursues an unparalleled ambition – to serve Hong Kong and the world using world-class technologies with impeccable quality, and become the world’s most essential company that transforms prenatal healthcare. Powered by our visionary biomedical professionals and the inventions, Xcelom is proud to offer our flagship service – safeT21expressTM to every pregnant woman and her babies who deserve the best protection and care.
We run the technology. We dream the technology. We breathe the technology
– because our babies deserve only the best.
And we must deliver it, whatever it takes.
From our Staff Mission, Xcelom