Chromosome analysis—also known as karyotype—is a test to find the
size, shape, and number of chromosomes in a sample of body cells. Chromosome
analysis can be done on blood, tissue, or cells from amniotic fluid (the fluid
that surrounds the baby in the womb).
Extra or missing chromosomes, or abnormal positions of chromosome pieces, can
cause problems with a person's growth, development, and body functions.
Chromosome analysis can help find out if:
The chromosomes of an adult have an
abnormality that can be passed on to a child.
A chromosome problem
is preventing a woman from becoming pregnant or causing her to
A chromosome problem is present in a
Chromosomal problems may have caused a baby to be
The cause of a birth defect or disability is a