Effective 12-8-23: Due to Flu Season, all SLH Hospital Visitors must be 12 years of age or older; 2 visitors are permitted to a room.
St. Lawrence Health


Our state-of-the-art laboratories do not require appointments.
Lab Employees

Laboratory Services

Canton-Potsdam Hospital, Gouverneur Hospital, and Massena Hospital have certified technologists and technicians to analyze your laboratory samples using the latest methods and technology with a focus on accuracy and responsive turnaround. For reference testing (rarely ordered or highly specialized laboratory testing), CPH maintains a contract with world-famous Mayo Clinic.

Located Where You Need Us

For your convenience, St. Lawrence Health offers lab services at six locations where you can expect the highest quality of care. Appointments are not required.

Canton-Potsdam Hospital Main Campus
50 Leroy Street, Potsdam, NY 13676
(315) 261-5940 (Lab)
(315) 261-5240 (Central Scheduling)
Daily, 7:00 am - 3:00 pm
[CPH outpatient lab services are limited to Drug Screening Collection, 3 Hour Glucose Tolerance Testing, and STAT orders placed by providers Monday - Friday.]

EJ Noble Building
80 East Main Street, Canton, NY 13617
(315) 261-5940
Monday - Friday, 7:00 am - 4:00 pm

Gouverneur Hospital
77 West Barney Street, Gouverneur, NY 13642
(315) 287-1000
Monday - Friday, 7:00 am - 5:30 pm
Saturday, 8:00 am - 11:00 am

Helen Snell Cheel Medical Campus
49 Lawrence Avenue, Potsdam, NY 13676
(315) 261-5940
Monday - Friday, 6:30 am - 6:00 pm

Massena Hospital
1 Hospital Drive, Massena, NY 13662
(315) 769-4286
Monday - Friday, 7:00am - 7:00pm
Saturday and Sunday, 8:00 am - 12:00 pm by appointment only

St. Lawrence Health Medical Campus
6119 State Route 11, Canton, NY 13617
(315) 261-5940 
Monday - Friday, 8:30 am - 4:30 pm

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