Contact CLSI: Get in Touch with Us Today
We’d be happy to speak with you more about our products, programs, membership, and mission.
CLSI Address
Clinical and Laboratory Standards Institute
950 West Valley Road, Suite 2500
Wayne, PA 19087 USA
Please send payments to:
CLINICAL AND LABORATORY STANDARDS INSTITUTE
PO Box 645766
PITTSBURGH, PA 15264-5255
Please send overnight courier payments to:
PNC Bank C/O CLINICAL AND LABORATORY STANDARDS INSTITUTE
Lockbox Number 645766
500 1ST AVE
PITTSBURG, PA 15219
Phone Numbers
P: +1.610.688.0100
F: +1.610.688.0700
Toll Free (US): 877.447.1888
Customer Service phone hours
8:30 AM–5:00 PM Eastern (US) Time
