FAQS

Will the outcome of safety 21 express be affected by the presence or birth of Down's syndrome?

General Questions

• Q What are the differences between our standard panel and advanced panel?

  Standard Panel screens for14validated conditions.

  Advanced Panel screens for chromosomal aneuploidies of all23pairs of chromosomes, including trisomies and the126microdeletions or microduplications with a minimum size of 3 Mb.

  The test results and reports from both tests are signed by our medical technologists and will be reviewed by the professor from the Chinese University of Hong Kong.

  * Since the advanced findings are rare and complex, insufficient data for validation may lower the accuracy. Microdeletions may occur in less than 3Mb in size, SafeT21ExpressTMonly searches for microdeletions with a minimum size of 3Mb.

• Q Who are eligible to do SafeT21 Express?

  
  

  Pregnant women with pregnancy of appropriate gestational age as below:

  	Singleton	Twins/ Fetal reduction	Triplets
  Gestational age	>10 weeks	>12 weeks	>14 weeks

  We highly recommend you to do our from 10 weeks gestational age and up to 24 weeks.
  

  
  

• Q Is there any gestational age limit for safeT21 Express?

  No. However, it should be done as early as possible in case of follow-up action or treatment plan to safeguard your baby.