What is a karyotype?

A karyotype is a test where the chromosomes, which contain your DNA, are stained with a special dye so that they can be examined under a microscope. Normal cells contain 23 pairs of chromosomes.

female karyotype

Abnormal karyotypes

Abnormalities that can be seen on a karyotype test include a gain or loss of a chromosome, loss of a piece of the chromosome, or an exchange of genetic material between chromosomes. A complex karyotype means that three or more of these abnormalities were found.

abnormal male karyotype

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