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Blood Work

CHEO's laboratory patient services office provides blood work for:

  • CHEO inpatients
  • CHEO outpatients
  • Community patients with exceptions

Please make sure to check our hours of operation and confirm you are eligible for blood work at CHEO before coming to the lab. CHEO will not accept community patients that do not meet one of the criteria below.

Not sure if your child qualifies for our services? Contact us at 613-737-7600 extension 2691.

What you need to know

CHEO patients: Provided as part of your child’s hospital visit, and for everyone seen in the Genetics Clinic — including adults.

Community patients under 5: A regular blood work requisition from a health care provider is all that’s needed.

Community patients 5 and older with special medical needs
A physician must complete a Phlebotomy Services Exception Form for children and youth who have:

  • a physical disability with a complex diagnosis
  • a behavioural, neurodevelopmental or mental health diagnosis
  • extreme anxiety requiring specialized venipuncture
  • a referral for phlebotomy from a community sub-specialist

The form is valid for 1 year and must be shown at every visit — on paper, or as a photo on your phone.

Before coming to the lab

We draw blood for CHEO inpatients, CHEO outpatients, and community patients who meet one of the exceptions listed here. Please confirm your child is eligible before you travel.

Walk in. No appointment needed.

Blood work cannot be booked ahead. Simply arrive during our open hours.

  • Check that your child is eligible, using the list on the left.
  • Bring the requisition, fully completed by your provider.
  • Bring the Phlebotomy Services Exception Form, if needed.

Give yourself enough time. Note: the last patient of the day is taken 15 minutes before closing.

  • Ova, parasite, swab or urine testing for community patients. Please take these to a community lab.
  • Requisitions or exception forms not fully completed by the physician.

  • Child Life Specialists help children understand what will happen and stay calm through it. To request this additional support, or to learn more, call 613-737-7600 ext. 2321.
  • Extensive Needs Service supports children who need more time, space or a specialized approach. 

Not sure if your child qualifies?

Speak to someone in the Laboratory Patient Services Office: 613-737-7600 extension 2691.

You can also speak with a member of your child’s care team. They can confirm eligibility and help complete the right form before your visit.

Have you registered for MyChart?

MyChart is a free, secure, online patient portal that connects patients to parts of their CHEO electronic health record, anywhere, at any time. 

MyChart