Identify a Product (with a GTIN) or Location (with a GLN) 

What do you do after getting your GS1 Company Prefix?

You’ve obtained your prefix (if not, get a prefix here). Now what can you do with it?

If you need to identify products for retail point of sale or at all package levels (inner packs, cases, and pallets), or if you need to identify medical devices for U.S. FDA UDI*, select Identifying products (GTIN®) below.

If you need to identify functional groups, like a department within an organization, or physical sites that ship, receive, process, or hold inventories, select Identifying locations (GLN) below.

Once you’ve decided to identify a product or a location, select one of the following two choices:

If you would like to read more about getting started, go to:



Do you have barcodes or need more?


In this publication, the letters “U.P.C.” are used solely as an abbreviation for the “Universal Product Code”, which is a product identification system. They do not refer to the UPC, which is a federally registered certification mark of the International Association of Plumbing and Mechanical Officials (IAPMO) to certify compliance with a Uniform Plumbing Code as authorized by IAPMO.

*For information about the rule, see the U.S. FDA Unique Device Identification System 

Disclaimer: GS1 US is the local GS1 Member Organization that supports implementation of the GS1 System in the United States. GS1 US employees are not representatives or agents of the U.S. FDA, and the content herein has not been reviewed, approved, or authorized by the U.S. FDA.

GS1 is a U.S. FDA-Accredited Issuing Agency for UDI, and GS1 Standards are authorized for use in implementing the requirements of the U.S. FDA UDI Rule.