Karyotype Test

Chromosome Analysis

Results

Karyotype is a test to identify and evaluate the size, shape, and number of chromosomes in a sample of body cells.

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.
Abnormal:	There are more than or less than 46 chromosomes. The shape or size of one or more chromosomes is abnormal. A chromosome pair may be broken or incorrectly separated.

Go to previous section	Go to top of page	Go to next section
Author:	Douglas Dana Maria G. Essig, MS, ELS	Last Updated: July 10, 2007
Medical Review:	Joy Melnikow, MD, MPH - Family Medicine Anne C. Poinier, MD - Internal Medicine Renee H. Martin, PhD - Medical Genetics
© 1995-2008 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.