Prenatal testing can be complicated, but we’re here to help. Our genetic testing experts have provided answers to common questions to simplify the test ordering process.
Does the laboratory need to be notified in advance of sending a prenatal specimen?
What are the collection instructions and specimen requirements for prenatal and products of conception samples?
What are the specimen requirements if I order multiple tests?
What information should be submitted to the laboratory for prenatal and products of conception testing?
Is prenatal testing performed on direct specimen or cell cultures?
What is the cell culture process at Mayo Clinic Laboratories?
Are maternal cell contamination studies required for prenatal and products of conception testing?
Prenatal diagnostic procedures such as chorionic villus sampling and amniocentesis, as well as cases of pregnancy loss, are associated with a risk for maternal cell contamination when the fetal specimen comes into contact with maternal blood or tissue. If maternal cells are present in a fetal specimen, result interpretation can be compromised. As such, it is strongly recommended to perform maternal cell contamination studies with prenatal and products of conception testing to ensure that genetic testing results are representative of the fetus. However, testing will not be rejected if a maternal sample is not received.
How do I order maternal cell contamination studies to accompany prenatal and products of conception testing?
What is the turnaround time for prenatal and products of conception testing?
Can Mayo Clinic Laboratories send prenatal specimens to other labs if a particular prenatal test in not offered in house?
Who should I contact with pricing questions?
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