For most customers, the insulated shipper in which we sent vials to you initially can be used for returning samples.

Ship to:

Jonah Ventures

1600 Range Street Suite 201
Boulder, CO 80301

(785) 409-1655

Make sure to email us tracking information (

For frozen samples in an insulated shipper, 2-day express is usually sufficient. Fed Ex and UPS are typically better than USPS for shipping.