1 - 2 weeks
GENERIC CYTOGENETICS TEST
Karyotype, Chorionic Villus Sampling
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Detection of in utero chromosome abnormalities.
Interpretive report provided.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Schedule only through Perinatal counselors 763-4264 for genetic counseling and testing between 8 1/2 to 11 weeks gestation. A Chorionic Villus Sample (CVS) is obtained by the transabdominal or transcervical method. The sample is immediately handed to a Cytogenetic Technologist for processing. Specimens are transported to the laboratory and cultures established within 24 hours of collection. Please complete a MiChart test request and submit it with the specimen. A Cytogenetics Laboratory Requisition is available online at: http://www.pathology.med.umich.edu/handbook/Tables/UM_REQ_CYTOGENETICS….
Obtain 20 mg to 30 mg of chorionic villus specimen (CVS) by the transabdominal or transcervical method. Transfer the CVS to a Petri dish containing transport medium. Using a stereomicroscope and sterile forceps, assess the quality and quantity of the villi, and remove any blood clots and maternal decidua. Transfer the CVS by using sterile technique to one or two 15-mL centrifuge tube(s) with 15 mL of transport medium. Send specimen refrigerated. Specimen cannot be frozen.