Questions or comments? Our customer service and scientific support teams are available via phone or email during open business hours. See the list below for specific departments.
For all order-specific inquiries, please contact the designated team directly via email with your order number in the subject line and your query in the body of the email.
Locations
Main Offices and Laboratory
Address: 35 Waltz Drive, Wheeling, IL 60090
Hours: Mon-Fri 9:00AM - 5:00PM CT
Phone: (847) 520-9162
Toll-Free: (800) 557-2248
Germantown, Maryland Laboratory
Address: 12321 Middlebrook Road, Suite 105, Germantown, Maryland 20874
Hours: Mon-Fri 9:00AM - 5:00PM ET
Phone: (847) 520-9162
Toll-Free: (800) 557-2248
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