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Karyotyping

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Karyotyping

Alternative Names: Chromosome analysis Normal Values: Females: 44 autosomes and 2 sex chromosomes (XX), denoted 46 (X,X) Males: 44 autosomes and 2 sex chromosomes (XY), denoted 46 (X,Y) What abnormal results mean: Abnormal results may show Down syndrome (Trisomy 21 = three copies of chromosome 21 instead of the normal two copies), Trisomy 18, Philadelphia chromosome, Klinefelter syndrome, Turner syndrome, or other abnormalities. Text Continues Below Additional conditions under which the test may be performed: Chronic myelogenous leukemia (CML) or other leukemias Multiple birth defects A baby born with genitals that are neither completely male or female

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