I think you mean that you have created an app in Xcode, but only have a test provisioning certificate.
If that is the case, you can send the build zip to someone who can load it through iTunes to test it for you. I suggest you read the details in the Developer portal on how to do this. I would image you have to have the other test device added to your provision list before you can do this, but I haven't actually tried this myself.
If you are not a member of the dev program, the answer is No, you can't.