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Paediatric Laboratory Medicine

Contact Ordering and Billing

Customer Service Hours  

Toll Free: 1-855-381-3212

Local: 416-813-7200

Customer service representatives are available Monday to Friday, 7 a.m.to 5 p.m. EST.

Off Hours

Off hour inquiries can be left on voicemail. Voicemails are retrieved daily Monday through Friday and responded to same day.

Laboratory Operating Hours  


Hours of Operation


 24 hours/day, 7 days/week

TDM & Toxicology Laboratory

 24 hours/day, 7 days/week

Clinical Test Development

 8 a.m. to 4 p.m. Monday to Friday

Metabolic Disease Laboratory

8 a.m. to 4 p.m. Monday to Friday


9 a.m to 5 p.m. Monday to Friday 

Molecular Haematopathology

8:30 a.m. to 5:30 p.m. Monday to Friday

(Molecular Microbiology, Serology)

8 a.m. to 7 p.m. Monday to Friday
9 a.m. to 5 p.m. Sat, Sun and holidays

Genome Diagnostics

8 a.m. to 5 p.m. Monday to Friday


8 a.m. to 5 p.m. Monday to Friday



Please carefully read the recommended specimens and shipping instructions on each of the requisitions before ordering a test. Incomplete and/or illegible requisitions and/or specimen labeling will result in testing being suspended until the complete information can be obtained.

Specimen Drop Off  

All samples can be dropped off 24 hours a day in room 3642 (Rapid Response Lab).

Directions: Take Atrium elevators to the 3rd floor, walk west (away from the glass wall at the end of the building) and follow the signs to the Rapid Response Lab.

Drop offs after 7 pm: Please only use the 170 Elizabeth Street entrance, the University entrance is locked.

Shipping Address  

The Department of Paediatric Laboratory Medicine
The Hospital for Sick Children
170 Elizabeth Street, Room 3642 (Rapid Response Lab)
Toronto, ON M5G 1H3


For questions relating to invoicing please contact: Accounts Receivable at 416-813-7805.

Statement of Responsibility  

Outlined below are the Standard Terms and Conditions which apply to the referral of all specimens for laboratory testing to SickKids unless otherwise stipulated in a separate agreement.

Responsibility of The Hospital for Sick Children

As a referral laboratory, under Institute for Quality Management in Healthcare (IQMH) standards, The Hospital for Sick Children (SickKids) is responsible for:

  • Reporting test results including critical/significant results to the referring health care institution. (Genetics results will be reported directly to the ordering physician).
  • Providing documented or verbal interpretation of results.
  • Complying with all applicable legal requirements to protect the privacy of all patient information.
  • Notifying the referring health care institution immediately if we suspect non-proficient performance which may affect test results.

Laboratory Identification  

Department of Paediatric Laboratory Medicine
The Hospital for Sick Children
555 University Avenue
Toronto, ON M5G 1X8

Accreditation Certificates