Now – Order Official Reference Standards Directly from USP.

Order Reference Standards directly from USP and receive quality service:

Immediate order confirmation, same-day processing (until 2PM EST), and shipping.
Express 3–5 day delivery *
USP Customer Service has representatives able to speak English, Spanish, French, German, Italian, Arabic, Korean, Hindi, Urdu, Bangla, and Punjabi.
Call +1-301-881-0666 or 1-800-227-8772 (US). A USP customer service representative is available to assist you from 8:30 PM EST on Sunday through 6:30 PM EST on Friday. However, Customer Service is closed for two hours each day, Monday - Thursday between the hours of 6:30 PM to 8:30 PM EST.
Direct access to USP's scientific expertise and technical support.

USP offers more than 1,800 official Reference Standards for noncomplex active substances, impurities, antibiotics, dietary supplements, and more. USP official Reference Standards help you develop pharmaceutical products that meet requirements for export to the United States.

Four ways to order directly from USP:

Order USP products online
Order by phone: +1-301-881-0666 or 800-227-8772
Order by fax: +1-301-816-8148
Order by mail: 12601 Twinbrook Pkwy, Rockville, MD 20852

Visit our support area for more information on how to order from USP and details about shipping information.

* Delivery times may vary – estimates are based on average international delivery schedules. Due to certain restrictions, controlled substance orders will require additional time.