Antibodies are crucial reagents in much of pain research for applications such as immunohistochemistry or western blotting.
Some antibodies are great and others are very poor, and some work only in specific applications.
Here is a spreadsheet that I've created, along with some colleagues, that reports on the results of certain antibodies for common pain-related targets. We've experimentally validated these. If you'd like to contribute, send me a private message and I'll add you.