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Chromosome Analysis, Chorionic Villus
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Ordering Recommendation
Prenatal chromosome analysis on chorionic villi when individual
• Is at increased risk for fetal aneuploidy based on maternal age, abnormal noninvasive prenatal testing (NIPT), abnormal multiple marker screening, or abnormal fetal ultrasound.
• Has a family history of chromosome abnormality or genetic disorder.
• Desires diagnostic testing instead of screening.
Mnemonic
Methodology
Giemsa Band
Performed
Sun-Sat
Reported
7-14 days
New York DOH Approval Status
Specimen Required
Thaw media prior to collection.
DO NOT FREEZE. Do not place in formalin. Transport chorionic villus (CVS) specimen in a sterile, screw-top container filled with tissue culture transport medium.
Room temperature
Frozen specimens. Specimens preserved in formalin.
Ambient: 48 hours; Refrigerated: 48 hours; Frozen: Unacceptable
Reference Interval
By report
Interpretive Data
Refer to report
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Counseling and informed consent are recommended for genetic testing. Consent forms are available online.
Laboratory Developed Test (LDT)
Note
These studies involve culturing of living cells; therefore, turnaround times given represent average times, which are subject to multiple variables.
A processing fee to cover sex confirmation and rule out maternal contamination by FISH is added to all Chromosome Analysis, Chorionic Villus Sampling (CVS) tests. An additional processing fee will be charged if this procedure is canceled at the client's request after the test has been set up or if the specimen integrity is inadequate to allow culture growth.
Chorionic villus in a sterile, screw-top container filled with tissue culture transport medium (ARUP Supply #32788). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. If cytogenetics tissue media is not available, collect in plain RPMI, Hanks solution, saline, or ringers.
If specimen size is too large for a normal collection tube, a larger sterile container can be used such as a sterile urine cup and can be flooded with several tubes of cytogenetic tissue media.
This test must be ordered using Cytogenetic test request form #43098 or through your ARUP interface. Please submit the Patient History for Prenatal Cytogenetics form with the electronic packing list (https://ltd.aruplab.com/Tests/Pdf/65).
Hotline History
Hotline History
CPT Codes
88267; 88235
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0097610 | Chromosome Analysis, Chorionic Villus | 33774-1 |
| 2002201 | EER Chromosome Analysis Chorionic Villus | 11502-2 |
Aliases
- chorionic villi
- Karyotype, CVS
- NIPD confirmation study
- NIPT confirmation study
- Prenatal Chromosomes, CVS
- Prenatal Diagnosis, CVS, Chromosome Analysis
- villi
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