Karyotype tests are tests performed to determine whether the fetus has genetic and chromosomal disorders. During pregnancy, the mother and fetus may encounter some unusual risks, so karyotype tests are only performed on pregnant women at high risk.

Chromosome testing helps detect abnormalities of human chromosomes that cause a number of dangerous diseases. This is a modern paraclinical test, helping to diagnose diseases related to genetics, congenital malformations or find the cause of infertility in couples.

Cri du chat syndrome is a rare genetic disorder in which part of the short arm of chromosome 5 is missing. Cri du chat syndrome is also known by several names: Cry of the Cat Syndrome; 5p- Syndrome; CdCS Syndrome; Lejeune Syndrome.

Triploidy is a rare chromosomal abnormality. While normal humans have 46 chromosomes (diploidy 2n=46), triploidy has 69 chromosomes (triploidy 3n=69) in all cells of the body.