Contact & Order
Let's work together.
Whether you're ready to order a test, need clinical support, or want to speak with a representative — our team is here to help.
Send us a message
Complete the form below and a Guardant Health representative will follow up within one business day.
Other ways to reach us
Provider Support Line
1-888-GUARDANT
Monday – Friday, 8 AM – 8 PM ET
Headquarters
505 Penobscot Drive, Redwood City, CA 94063
Guardant Health, Inc.
Ordering resources
Online requisition portal
Submit test orders, track results, and manage your account through the Guardant Health provider portal.
Collection kit request
Request blood collection kits and shipping materials for your practice at no charge.
Reimbursement support
Our billing team can assist with prior authorization, coverage verification, and patient financial assistance.