A normal human karyotype consists of 22 pairs of autosomes and two sex chromosomes. Note the similar size and striped (banding) pattern between each of the pairs.

What does a normal karyotype mean?

Results of a karyotype test are usually available within 1 to 2 weeks. Karyotype. Normal: There are 46 chromosomes that can be grouped as 22 matching pairs and 1 pair of sex chromosomes (XX for a female and XY for a male). The size, shape, and structure are normal for each chromosome.

How do you know if a karyotype is normal?

Females have two X chromosomes, while males have one X and one Y chromosome. A picture of all 46 chromosomes in their pairs is called a karyotype. A normal female karyotype is written 46, XX, and a normal male karyotype is written 46, XY.