Chorionic Villus Sampling test is done in the 10th to 12th week after the first day of the mother's last menstrual period.
Chorionic Villus Sampling
The test is done by looking at cells taken from the chorionic membrane or placenta. No anaesthetic is required, and a test result is usually available in two to three weeks.
When the test is carried out by an obstetrician experienced in the technique, the risk of miscarriage related to the test is about 2 %. (Modified from: Checking your baby's health before birth. State Health Publication Number (PA) 94-090)
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Wolstenholme J, Emslie JB, Connors S. Association of Clinical Cytogeneticists chorion villus sampling database 1987-2000. Prenat Diagn. 2006 May;26(5):420-7. ACC CVS database
Natinal Library of Medicine (USA)
Clinical Trial (USA) - chorionic villi sampling Invasive Prenatal Testing Decisions in Pregnancy After Infertility
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The Merck Manual- Tests for Genetic Disorders
Reviews | Articles | Search NCBI Bookshelf | Search PubMed | Glossary
Reviews
Evans MI, Wapner RJ. Invasive prenatal diagnostic procedures 2005. Semin Perinatol. 2005 Aug;29(4):215-8.
Ball RH. Invasive fetal testing. Curr Opin Obstet Gynecol. 2004 Apr;16(2):159-62.
Weisz B, Rodeck CH. Invasive diagnostic procedures in twin pregnancies. Prenat Diagn. 2005 Sep;25(9):751-8.
Articles
Savva GM, Morris JK, Mutton DE, Alberman E. Maternal age-specific fetal loss rates in Down syndrome pregnancies. Prenat Diagn. 2006 Jun;26(6):499-504.
Wolstenholme J, Emslie JB, Connors S. Association of Clinical Cytogeneticists chorion villus sampling database 1987-2000. Prenat Diagn. 2006 May;26(5):420-7.
Search NCBI Bookshelf: Chorionic Villus Sampling
Search PubMed: Search May 2006 "Chorionic Villus Sampling" 2,229 reference articles of which 261 were reviews.
Search term = Chorionic Villus Sampling
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Look at types of Abnormal Development that can occur during development.
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How do I find out if everything is OK with my developing baby and what are the tests that doctors carry out?
Prenatal diagnosis is based the various types of tests that can be carried out to inform parents and clinicians. With the rising age of mothers in Australia and new knowledge about family genetic history these tools are useful in helping clinicians check the developing fetus. Note that some tests, like ultrasound, are relatively non-invasive, informative, and carried out in many suburban clinics.
This page has 2 main resources:
The first is a NSW Pamphlet "Checking your baby's health before birth." There is a similar online resource available from South Australia.
The second resource covers diagnosis after birth, this is a 1988 NHMRC Recommendation and is a guide to indicators in the neonate.
Please email Dr Mark Hill if you wish to make a comment about this current project.