1. Why do you need a pre pregnancy check-up?

Pre pregnancy examination refers to the physical examination that couples go to the hospital before they are ready to have a baby, so as to ensure the birth of a healthy baby, so as to achieve eugenics. A man's pre pregnancy test is as important as a woman's. Both men and women need to have a pre pregnancy check-up to ensure normal pregnancy and a healthy baby.

2、Why do you need a chromosome test?

Chromosome is the main carrier of genetic information, the carrier of genetic genes, and exists in the nucleus. In 1883, American scholars put forward the theory of genetic gene on chromosome. In 1928, Morgan confirmed that chromosome is the carrier of genetic gene, and thus won the Nobel Prize in physiology and medicine.
There are 46 chromosomes in each cell of human, and 23 pairs of them are made according to size and shape. The first pair to the 22nd pair are called autosomes, which are shared by men and women; the 23rd pair are sex chromosomes, the female sex chromosomes are two X chromosomes, the male sex chromosomes are one X chromosome and one Y chromosome.
Sperm and egg chromosomes respectively carry the genetic genes of father and mother, which record the genetic information passed from parents to their children. Similarly, when the sex chromosome is abnormal, genetic diseases can be formed. Chromosomal abnormalities can lead to oligozoospermia and azoospermia, and 2% - 21% of male infertility.
The simple method of chromosome examination is to check the karyotype. Karyotype refers to the DNA map containing tens of thousands of possible human genes, including many individual genes. Gene is just like a pearl in a beautiful string of pearls. Many human diseases and deformities are caused by chromosome deletion, destruction and extra increase. Many large chromosome changes can be found by karyotype examination. The karyotype examination of chromosome group can tell us:
1. Whether the number of DNA is correct.
2. Whether the structure of DNA is abnormal.
3. The gender of the individual (only in the presence of gender related genetic disease notification).
4. Some sterility problems of individuals.