A 30-year-old woman, who has had two habitual miscarriages, discovered she has chromosome 9 arm inversion.

The purpose of chromosome testing is to detect chromosomal abnormalities and diagnose related diseases. Generally, the results from regular hospitals are reliable, but if you have doubts about the results, it is recommended to have a retest at another hospital.

Down syndrome is a congenital mental retardation caused by chromosomal abnormalities. Although it cannot be cured, it can be detected early through Down screening and treated to alleviate the burden on society and families.

Causes and Prevention of 21-Body Chromosome Abnormalities

Both partners’ chromosomes before pregnancy are only preliminary screenings with karyotypes, which cannot detect minor chromosome abnormalities.

Women with chromosome abnormalities and a history of recurrent abortions, do they still have a chance of getting pregnant?

At 13 weeks of pregnancy, an ultrasound examination indicates a possible cystic hygroma. To further confirm if the fetus has chromosomal issues, it is recommended to undergo amniocentesis or non-invasive DNA testing.

Down syndrome screening is a method that involves drawing a pregnant woman’s serum to detect the concentration of alpha-fetoprotein and human chrionic gonadotropin (HCG) hormone in the maternal serum, and combines the woman’s due date, age, weight, and gestational age at the time of blood draw to calculate the risk coefficient of giving birth to a Down syndrome child.

How to perform a chromosome test and its impact on fertility.

After taking Yuting, it is recommended not to undergo a chromosome test to avoid affecting the results. It is suggested to wait at least half a month after discontinuing the medication before undergoing the test.