Please note that Study recruitment and our Blood Collection Program will be ending on March 31st, 2017. Click here to learn more.

Last chance to join the fight against cancer and chronic disease!

The deadline for registering for the Ontario Health Study (OHS) is March 31st, 2017. The Study aims to build a resource for researchers to use now and decades into the future by collecting data and information through questionnaires, physical measurements and blood samples. With more than 230,000 Ontarians participating and a biobank of almost 40,000 blood samples, the OHS is one of the largest long-term health studies in Canada. This is your last chance to make this potentially far-reaching contribution to health research.

Find out more


Discovery—It's in your blood.

Provide a blood sample to the Ontario Health Study.

Click here to learn more.

Tell us how you're doing.

Update us on your health by filling out our first follow-up questionnaire.

Click here to learn more.


Is the OHS coming to your community?

March 2017

Ottawa Study Centre
Taggart Family YMCA-YWCA, Second Floor,
180 Argyle Avenue, Ottawa, Ontario K2P 1B7

March 28-30, 2017
Tuesday, March 28, 9:30am-6:30pm
Wednesday, March 29, 8:30am-6:30pm
Thursday, March 30, 8:30am-3:30pm

Validated parking is available for participants at this location. Please take a white ticket from the machine upon your arrival. You will be given a blue ticket at the end of your appointment to waive the cost of parking.
This location is wheelchair accessible.
Please note that only blood samples will be collected at this location.

Sign up for the Study and book an appointment

Already an OHS Participant? Login to book an Appointment

Get 

directions

Nepean Study Centre
YMCA-YWCA Employment Access Centre,
Merivale Mall, Second Floor Suite 2000,
1642 Merivale Road, Nepean, Ontario K2G 4A1.

March 28-30, 2017
Tuesday, March 28, 9:30am-7pm
Wednesday, March 29, 8:30am-7pm
Thursday, March 30, 8:30am-3:30pm

Parking is free.
This location is wheelchair accessible.
Please note that only blood samples will be collected at this location.

Sign up for the Study and book an appointment

Already an OHS Participant? Login to book an Appointment

Get 

directions