If you have a question about a medical condition, consult with a healthcare professional or, in the case of an emergency, call 911 immediately.
You can contact us by phone, fax, email, or by filling out the form below.
Visit the CSL Plasma website to get more information on donating plasma or
to send your questions and comments.
PO Box 61501
1020 First Avenue
King of Prussia, PA 19406-0901 USA
(Standard business hours are 8:30 am - 5:00 pm ET)