The importance of genetics

Genetics & Fertility Care


Genetic counselling and testing can be an integral part of your fertility journey at every stage – whether you are starting to plan for the future, undergoing treatment, or currently pregnant. Twig offers comprehensive genetic counselling and testing that ensures seamless integration with your overall care plan.


Genetic Counselling

What is Genetic Counselling?

Genetic counselling plays an important part in helping people identify and understand possible hereditary risks and genetic conditions. The role of a genetic counsellor is to help you navigate genetic testing options, interpret results and provide support on your family building journey.

Our approach

At Twig, we offer comprehensive genetic counselling and testing that ensures seamless integration with your overall care plan as well as having an in-house genetic counsellor as a part of your dedicated care team. Our approach is focused on providing you with compassionate, inclusive, evidence-based genetic support that is always centred on your unique values, goals and circumstances.

Genetic Counselling Services

Our genetic counsellor hosts regular live webinars that are accessible to all our patients. These complimentary education sessions provide information on genetic testing so that you can feel confident in making informed decisions about what options are right for you.

During a family history assessment with our genetic counsellor, we will review your personal and family history and determine what genetic testing may be right for you. This assessment will help you understand how your family history may impact your family planning and support you in making informed decisions about your plan of care.

We offer complimentary genetic counselling sessions pre and post genetic testing to help you navigate what options are right for you, interpret the results, and to provide additional support.

Genetic Testing

What is Genetic Testing?

Genetic testing looks at a person’s genes and can help detect hereditary diseases or the risk of passing on genetic disorders.

In fertility care, there are a number of genetic tests that can be done throughout the journey such as carrier screening for intended parents, preimplantation genetic testing of embryos and prenatal screening during pregnancy.

Before Treatment

Genetic carrier screening is a genetic test, using a blood or saliva sample, that assesses your chance of having a child with one of hundreds of rare genetic conditions that could impact a child’s health and development. Knowing about an increased chance of a genetic condition can allow you to prepare or to take steps before or during a future pregnancy to reduce the chances of that condition in your child.

At Twig, we offer genetic carrier screening to everyone, with complimentary pre-test counselling to help you make an informed decision that is right for you. After completing genetic carrier screening, our genetic counsellor will walk you through your results in detail and ensure you understand what they mean for you and for your family building plan.

During Treatment

What is preimplantation genetic testing (PGT)?

PGT is a genetic screening test that can be performed on embryos created via in vitro fertilization (IVF) before they are transferred into the uterus for pregnancy. This allows you to prioritize embryos for transfer that are more likely to lead to an ongoing pregnancy, and/or less likely to have a specific genetic condition or concern.

How does PGT work?

During the IVF process, a small number of cells are removed from embryos that reach a certain stage of development. The DNA from those cells is sent to an outside genomics laboratory for analysis, while the embryos themselves are kept frozen safely on-site at Twig.

Preimplantation Genetic Testing for Aneuploidy (PGT-A), is the most common form of PGT. PGT-A is a screening test for the number of chromosomes an embryo has, which impacts its ability to implant and lead to an ongoing pregnancy. Embryos with the typical number of chromosomes (euploid embryos) are much more likely to implant and less likely to lead to a pregnancy loss.

At Twig, anyone planning IVF has the option to include PGT-A as part of their treatment plan. It is important to discuss the option of PGT-A with your physician and genetic counsellor to understand how it may fit into your care plan, and to make an informed decision that is right for you. Your genetic counsellor will also review your PGT-A results with you in detail and help you understand what they mean for your next steps.

Preimplantation Genetic Testing for Monogenic disorders (PGT-M) is a specific type of PGT used to test embryos at high risk for a specific inherited condition. PGT-M is offered only if the egg and/or sperm providers are known to be affected by, or carriers of, a genetic condition that could be passed onto future generations. Your genetic counsellor and physician can help you understand and make decisions about PGT-M if it applies to you.

Preimplantation Genetic Testing for Structural Rearrangements (PGT-SR) is a specific type of PGT used only when either the egg or sperm provider has a known chromosomal rearrangement themselves. Your genetic counsellor and physician will talk to you in detail about the option of PGT-SR if it applies to you.

During Pregnancy

Prenatal genetic screening uses bloodwork and/or ultrasound to tell you about the chance that your pregnancy will be affected by a chromosome difference that can cause a syndrome in your baby. The testing poses no risk to your pregnancy. The choice whether to have prenatal genetic screening is personal and our complimentary pre-test counselling will help you make an informed decision that is right for you. Twig can facilitate the prenatal genetic screening test of your choice, including eFTS or NIPT, followed by an in depth review of your results with our genetic counsellor.


Making your fertility goals possible


Everyone deserves to grow their family, and we want to make that possible for you too. We offer simple and transparent pricing that helps people make their family-building goals a reality. Some services and drug costs are covered by OHIP or private insurance. Our care team will work closely with you to ensure you receive maximum coverage for supported services.