Contact Customer Service

Crescendo Bioscience’s Customer Service team can assist with the following:

  • General Questions
  • Account Setup
  • Sample Logistics Questions
  • Reimbursement Questions
  • Setting up a Consultation with our Medical Affairs team
  • Supply Requests
  • Shipping Assistance


Please contact Customer Service at 1-877-RHEUMDX (1-877-743-8639) Monday through Friday 6 AM to 5 PM PT (9 AM to 8 PM ET) or email us at

Answers to Frequently Asked Questions can be found here.