ARR1-22×2 refers to the results of chromosome microarray analysis, chromosome 1-22 two each, is normal.
1. Chromosome microarray analysis is commonly used in routine pregnancy test, can check whether the number of chromosomes is abnormal to detect chromosomal hereditary diseases, and can clearly detect the possibility of the fetus suffering from congenital diseases and hereditary diseases.
2. Under normal circumstances, the number of chromosomes in the human body is 23 pairs, totaling 46, including 22 pairs of autosomes and 1 pair of sex chromosomes. The result of normal chromosomes is recorded as ARR(1-22)x2,(XY)x1 in the result of chromosome microarray analysis, XY is male and XX is female.