Contact CLSI: Get in Touch with Us Today
We’d be happy to speak with you more about our products, programs, membership, and mission.
Mailing Address
Clinical and Laboratory Standards Institute
PO Box 334
Malvern, PA 19355
Office Address
Global Headquarters
Clinical and Laboratory Standards Institute
1055 Westlakes Drive, Suite 300
Berwyn, PA 19312
Dubai Office
Clinical and Laboratory Standards Institute MENA
Office Suite # 902, Level 9, Dubai World Trade Center,
P.O.Box 124752, Dubai, United Arab Emirates
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
PITTSBURGH, PA 15219
Phone Numbers
Phone: +1.610.688.0100
Fax: +1.610.688.0700
Toll Free (US): 877.447.1888
Middle East & Africa: +971 4 311 6357
Customer Service phone hours
8:30 AM–5:00 PM Eastern (US) Time
CLSI MENA
Phone: +971 4 311 6357
Toll Free (US): 877.447.1888
MENA office hours
9:00 AM - 5:00 PM UAE Standard Time (GMT+4:00)
E-mail Us
Membership Inquiries: membership@clsi.org
Customer Service, Orders, and General Questions: customerservice@clsi.org
Middle East & Africa Support: mena@clsi.org
Technical Questions
If you have technical questions regarding the content of CLSI standards and guidelines, please e-mail standard@clsi.org.