Chromosome Analysis, Routine (Chorionic Villus Sampling (CVS))

Test Information

Chromosome analysis is an important component in the diagnosis and evaluation of genetic disorders. Chromosome abnormalities in which there is too much or too little genetic material can result in congenital malformations, intellectual disability, and aberrant sexual differentiation. Chromosome analysis can detect chromosome abnormalities such as trisomy, monosomy, triploidy, and marker chromosomes as well as balanced and unbalanced rearrangements. For routine chromosome analysis a minimum of 20 cells are counted to determine the modal number, and a minimum of 5 cells are analyzed for chromosomal abnormalities from G-banded preparations.

Turnaround Time

14 days

CPT Code(s)

88235, 88267, 88280, 88285 x5, 88291

Cost

$992

Specimen Requirements

Chorionic Villus Sample (CVS) is the specimen type for this test. If sending cultured flasks, 2x T25 confluent flasks are required. Maternal samples are required to accompany prenatal specimen. 4-5 ml of peripheral blood should be collected on each parent in an EDTA (lavender top) tube. Additional specimen types include: saliva and extracted DNA.

Transport Instructions

CVS samples should be kept at room temperature; do not freeze or refrigerate. Specimen should be sent by courier or overnight mail to arrive at the laboratory the next day.

Have Questions? Need Support?

Call our laboratory at 1-800-473-9411 or contact one of our Laboratory Genetic Counselors for assistance.
Robin Fletcher, MS, CGC
Falecia Thomas, MS, CGC

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