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Breath Hydrogen

Alternate test name

Lactose Tolerance Test

Lab area
Clinical Biochemistry - Metabolic Diseases
Method and equipment
Gas chromatography
Expected turn-around time
Routine: 24 hours
Specimen type

Expired Air

Storage and transportation

Contact Lab

Special requirements

Breath Hydrogen collections are scheduled by faxing the requisition to Customer service: 416-813-5431 or 416-813-6599 

All requests require the following information:
Patient information: full name, DOB, home phone number, Health Card number, substrate required and weight.
Physician's name, address and fax number. 

Testing is only available for children over 2 years of age. 

Shipping information
The Hospital for Sick Children
Rapid Response Laboratory
555 University Avenue, Room 3642
Toronto, ON
M5G 1X8
Phone: 416-813-7200
Toll Free: 1-855-381-3212
Hours: 7 days/week, 24 hours/day
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