Genetic Evaluation, Testing and Counseling Services

Advances in genetics have made it possible to determine your risk of developing a hereditary cancer or a genetic disorder. In addition, prenatal tests can detect inherited disorders and abnormalities, such as neural tube defects, Down syndrome and cystic fibrosis.

Our certified UC Irvine Health genetics counselors and medical geneticists are experts in diagnosing hereditary conditions and in educating people about the risk of passing them to their offspring.

Integrating the most recent advances in genetic technologies with comprehensive and compassionate healthcare, we provide the following services:

  • Genetic cancer risk assessments for people who may have cancer themselves or a family history of cancer
  • Medical genetics consultations for people who suspect they may have a genetic disorder based on physical findings or family history
  • Prenatal and preconceptional genetic consultations for people concerned about the risk for birth defects or genetic abnormalities

For more information or to schedule a consultation, please call us at 877-UCI-DOCS (877-824-3627) or fill out an appointment request form ›

Why choose us

Our Genetic Evaluation, Testing and Counseling Service experts help people who want to learn their genetic predisposition for medical conditions, including certain cancers and other diseases, or whether they may be carriers for inherited conditions that could affect their children.


We evaluate individuals with genetic disorders, birth defects or cancer, and we counsel them and their families about what their diagnoses may mean for their children and other relatives.

Our UC Irvine Health specialists working at Orange County's only university medical center, which gives them access to the latest technologies and the most recent findings in genetic medicine.They also help patients at the Chao Family Comprehensive Cancer Center, the only National Cancer Institute-designated comprehensive cancer center in Orange County.


Our genetic counselors are certified by the American Board of Genetic Counseling and licensed by the state of California. Our medical geneticists are physicians who are certified by the American Board of Medical Genetics and have specialized training in the diagnosis and medical management of genetic conditions, as well as training in another specialty such as pediatrics or internal medicine.

Our team of genetic counselors, medical geneticists and nurses are dedicated to providing a continuum of care to our patients. Whether assessing them for their risk of cancer or other conditions, or counseling them as they contemplate or embark on a pregnancy, we follow our patients throughout their experience, emphasizing close communication and compassionate care.

Cancer risk assessment

Our genetics specialists provide comprehensive cancer genetic assessments for patients concerned about their risk of a hereditary cancer.

A typical consultation involves compiling a detailed family history and looking for signs of a hereditary cancer syndrome.

A genetic counselor analyzes the family history and can often provide estimates for an individual’s personal risk of cancer, as well as the likelihood that a hereditary cancer syndrome runs in the family.

In many cases, a blood test may be available to further assess a person's risk of a hereditary cancer.

Common reasons people undergo a genetic cancer risk assessment include:
  • Diagnosed with cancer at an unusually young age
  • Diagnosed with two or more primary cancers
  • Diagnosed with a rare or unusual cancer

Genetic disorders assessment

Our physicians are experienced in diagnosing patients with rare genetic disorders. A typical evaluation by a medical geneticist involves a thorough physical examination, a review of medical records and a detailed assessment of an individual’s family history.

Specialized testing (a blood test, for example) also may be recommended. 

Once a diagnosis is confirmed, our physicians follow our patients over time and help manage many aspects of their care.

We diagnose many birth defects and genetic conditions. Some of the more common genetic conditions are:
  • Chromosome abnormalities
  • Fabry disease
  • Hereditary muscular dystrophy
  • Mitochondrial disorders
  • Metabolic disorders
  • Neurofibromatosis
  • Skeletal dysplasia
  • Unexplained intellectual disabilities

Prenatal and preconception counseling and testing

If you and your partner are thinking about having a child, the UC Irvine Health Genetics Evaluation, Testing and Counseling team can help assess the potential for abnormalities before conception. We also can help you evaluate the health of your fetus during pregnancy.

Our certified genetic counselors begin by working with you to develop a detailed family history, followed in some cases by specialized testing.

This can include analysis of blood, amniotic fluid or tissue samples to determine the biochemical, chromosomal or genetic markers that can designate the presence or absence of specific conditions.

We use the latest in genetic technologies, which can provide information about the fetus as early as the first trimester of pregnancy.

Risk factors

Along with genetics, the environment in which a fetus develops plays a critical role in whether a baby is born with physical or mental abnormalities. Statistically, there are a number of common factors that place a baby at greater risk, including:

  • Family history of birth defects, intellectual impairments or genetic disorders
  • Mothers who are 35 or older at delivery
  • Abnormal maternal screen result during pregnancy
  • Couples with a history of miscarriages or infertility
  • Mothers with chronic diseases such as diabetes or seizures
  • Exposures to certain medications or illnesses in pregnancy
There also are hundreds of disorders that can be diagnosed in fetuses, including:
  • Cystic fibrosis
  • Chromosome abnormalities
  • Down syndrome
  • Inherited anemia (sickle cell anemia, Fanconi anemia, thalassemia)
  • Major heart defects
  • Neuromuscular disorders (muscular dystrophies, spinal muscular atrophy)
  • Spina bifida
  • Tay-Sachs disease
Screening tests

At UC Irvine Health, we offer a variety of prenatal tests to determine genetic and physical development. Many involve DNA screening; others examine the baby’s physical structure. They include:

  • Prenatal ultrasound

This diagnostic tool uses sound waves to produce an image of the infant. Early in pregnancy (11-14 weeks), the measurement of the back of the fetal neck (nuchal translucency) can be used to determine the risk for abnormalities such as Down syndrome. Later in pregnancy it can help detect such structural defects as spina bifida and cleft lip.

  • Fetal echocardiography

This ultrasound test examines the structure and function of the developing baby’s heart at 20 to 22 weeks into the pregnancy.

  • Maternal blood screening

The newest non-invasive prenatal screening (NIPT) method uses the mother's blood to detect the presence of several chromosomal abnormalities, including Down syndrome and trisomy 18, with a detection rate of more than 98 percent. 

Other forms of maternal blood screening look for the presence of spina bifida, a condition in which spinal vertebrae fail to form completely around the spinal cord, as well as fetal abdominal openings.

  • Amniocentesis

Usually done between weeks 16 and 20 of pregnancy, amniocentesis involves a thin needle used to extract a small sample of fluid from the mother’s uterus. The sample, which contains skin cells that are normally shed by the fetus into the amniotic fluid, is analyzed for chromosome and other abnormalities.

  • Chorionic villus sampling (CVS)

This test, performed between weeks 11 and 13 of pregnancy, also involves retrieval of a small sample of the placenta, which is analyzed for chromosome and other abnormalities.

Our Team

Our medical geneticists and genetic counselors provide our patients with a continuum of care throughout their genetic testing and counseling experience.

Above all, we emphasize close communication between our various team members, our patients and their significant relatives

Our team members include:

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