Contact Us:

3F Clinic, 3N 12-20, McMaster Children's Hospital

Phone: 905-521-2100 ext. 73984 (3F Clinic)

Phone: 905-521-5085 (Newborn Screening Center)

Fax: 905-521-2651

Clinic Hours:

The clinic hours run from 8:30 a.m. - 4:30 p.m., Monday to Friday (closed on holidays)


The Clinical Genetics Program offers services for genetic assessment, providing genetic and metabolic testing, family counselling, and information regarding management and long-term outcomes for patients diagnosed with Genetic conditions.

We believe that we can make a difference in the health outcomes of our patients as advances in understanding the genetic mechanisms allow us to provide options of early intervention to minimize disease severity, new treatments, or prevent recurrent genetic condition in the family.

What Services do we Provide?

Genetic Consultation and investigation through:

Genetics Clinic: for diagnosis and management of children and adults with genetic issues

Genetic Counselling Clinic: provides education and counselling to parents or families about genetic/ metabolic conditions in their family

Metabolic Clinic: for diagnosis, management, and follow-up of children and adults with inherited  metabolic disorders

Newborn Screening Centre: one of 5 referral centers in the province for newborn screening, responsible for retrieving all positive newborn screens in our region.

Referral Information

A physician referral is required for the first visit with a geneticist or genetic counsellor.

Patients meeting any of the following criteria should be considered for referral to a genetic specialist:

1.  Family History

2.  Congenital Anomalies, Delayed Growth and Development

3.  Reproductive issues

Modified from:  Genetic Alliance; The New York-Mid-Atlantic Consortium for Genetic and Newborn Screening Services. Understanding Genetics: A New York, Mid-Atlantic Guide for Patients and Health Professionals. Washington (DC): Genetic Alliance; 2009 Jul 8. CHAPTER 6, INDICATIONS FOR A GENETIC REFERRAL. Available from:

Please note that our clinic may not be the most appropriate resource for all referrals. Alternative services are available for your patients:

If your patient has additional features of Ehlers Danlos Syndrome, please indicate this in your referral letter and provide supporting documentation. Pertinent features include:

In order to optimize our service for some indications, we will ask for additional information and/or an alternative service may be suggested:

For referrals related to diagnostic work-up for Hemophilia, please refer to a hematologist. We would be happy to see individuals if there is a known family history but please include details about the affected family member and provide a copy of their genetic testing result if it is available. 

Clinic Location:

The hospital is located at 1200 Main St. W., Hamilton, ON, L8N 3Z5.

Most genetic counselling appointments take place  in 3N12-20.

Most doctors appointments take place in the 3F clinic.

Your appointment letter will direct you to the appropriate location.

Hospital Map

What Happens When We Arrive?

When you arrive to the clinic please check in with the Business clerk at the reception desk. The business clerk will let the team know that you have arrived.

Staff will do their best to make sure you are seen at your appointment time.  If you feel you have been waiting a long time please speak with a business clerk at the reception desk. 

Urgent Referrals:

The clinics are not for emergencies. If you/ your child needs to be seen on an emergent basis, please contact your family doctor or go to your local emergency department.

Certain referrals are given priority appointments (pregnancy at risk, sudden deterioration in clinical status or developmental regression). If one of these applies to you/ your child, be sure your referring/ family doctor indicates this is on the referral.

Changing Your Appointment:

Please contact us as soon as possible if you need to change or cancel an appointment.

If there is any change in the clinical status of you/ your child (sudden deterioration, pregnancy, etc.) contact your referring or family physician so that he/she can ask us to prioritize your appointment


If you or your child has a respiratory illness with coughing/fever or vomiting/diarrhea please do not come to the clinic but call for further assessment/instructions as soon as possible prior to the appointment.

If you or your child has a communicable disease such as Chicken Pox or has been in contact with someone with Chicken Pox, please call the clinic before you come to the hospital.

What Should You Bring To The Clinic?

Interdisciplinary Team:

Genetic Counselor: A health care professional who provides information and resources to patients and families about genetic conditions, tests related to those conditions, and facilitates genetic testing.

Genetic Counselor (Newborn Screening):


Metabolic Team:

Metabolic Physician: geneticist specializing in metabolic disorders

Our Philosophy:

Our philosophy is family-centered care. We strive to provide the best care possible.


National Society of Genetic Counselors

Canadian Association of Genetic Counselors

Newborn Screening Ontario

American Board of Genetic Counseling

American College of Medical Genetics and Genomics

Canadian College of Medical Geneticists