What is cytogenetic testing?
Cytogenetic testing is used to study an individual’s chromosome makeup. The term karyotyping refers to the arrangement of nucleus chromosomes in order from the largest to the smallest to analyze their number and structure. Cytogenetic testing involves the determination of chromosome number and structure; variations in either can produce numerous abnormalities. With cytogenetic testing, the total chromosome count is determined first, followed by the sex chromosome complement and then by any abnormalities. A normal karyotype of chromosomes consists of a pattern of 22 pairs of autosomal chromosomes and a pair of sex chromosomes: XY for the male and XX for the female. A plus (+) or minus (-) sign indicates, respectively, a gain or loss of chromosomal material.
This question was answered in our Coding Essentials for Laboratories. For more hot topics relating to laboratory services, please visit our store or call us at 1.800.252.1578, ext. 2.
CPT® copyright 2024 American Medical Association (AMA). All rights reserved.
Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
CPT is a registered trademark of the American Medical Association.
Unlock 50% off all 2024 edition books when you order by July 5! Use the coupon code CO5024 at checkout to claim this offer!
CYBER WEEK IS HERE! Don’t miss your chance to get 20% off now until Dec. 2 with code CYBER24