How can we help?
Most questions are answered in a click. If not, the team is one email away.
- Verify a batchLook up a certificate of analysis by its batch number, straight from the named lab.
- Our standardsThe full, published quality specification every batch must meet before it ships.
- Shipping and returnsDispatch times, free shipping over $200, and the free reship guarantee.
- Contact the teamQuestions about a compound, a test result, or an order. We reply within one business day.
Common questions
- How do I check what is actually in a vial?
- Every batch is tested by a named third-party lab and published to the lab's public database. Enter the batch number on the Verify page and the certificate comes straight from the lab.
- How fast do orders ship?
- Orders placed before noon Pacific ship the same day by USPS Priority, with delivery in about three days within the United States.
- What if my package is lost or damaged?
- We reship it free, no questions asked. Signal absorbs the shipping risk.