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Contact Us

Give us a call

Thank you for your interest in CSL Behring. We care about your questions and concerns. You can find the best way to contact us from the list below.

MIchael Exner, CSL Behring Bern

For General Questions

CSL Behring Global Headquarters
Phone: +1 610-878-4000
Fax: +1 610-878-4009

1020 First Avenue
King of Prussia, PA 19406-0901 USA

MON - FRI: 7:30 a.m. - 4:30 p.m. EST


U.S. Medical Information

Phone: 1-800-504-5434
Fax: 610-878-4550

Medical Information Outside the U.S.

Please use local, in-country CSL Behring websites to contact us.

Clinical Trial Inquiry

Obtain more information about any of our current or prior clinical trials by emailing CSL Behring at or CSL Limited at
For studies registered on, the appropriate email is included in the study registration.


In the U.S. (including Puerto Rico)

Phone: 1-866-915-6958

Outside the U.S.

For all others, please use your local CSL Behring website to report an event.

U.S. Food and Drug Administration

You are also encouraged to report negative side effects of prescription drugs to the FDA.
Phone: 1-800-FDA-1088


Investor Relations

Bernard Ronchi (based in Melbourne, Australia)
Phone: +61 3 9389 3470

CSL Behring Brochure

See how we are Driven by Our Promise in our 16-page Corporate Brochure.

CSL Behring Fact Sheet

Learn about our company at-a-glance using this CSL Behring Fact Sheet.


U.S. Customer Service

For product orders and support to U.S. customers.

Customer Service Outside the U.S.

Please use your local, in-country CSL Behring website to place an order.

Human Serum Albumin (HSA) Excipient Inquiries

If you would like more information on purchasing Albumin for Excipient use, please click on the link below.

Thrombin & Fibrinogen Inquiries

If you would like more information on purchasing Fibrinogen and/or Thrombin for further manufacturing use, please click on the link below.

CSL Plasma US Lab employee
CSL Plasma

For any CSL Plasma corporate or donation inquiries, please refer to the CSL Plasma website for more information.

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Headquartered in Melbourne, Australia, CSL Limited includes: CSL Behring, incorporating CSL Plasma, and Seqirus, incorporating immunohematology.

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