I have shingles again in my chest internally is there a way to test if:: there , is no rash?

Yes: Shingles is usually diagnosed based on the history of pain on one side of your body, along with the telltale rash and blisters. Your doctor may also take a tissue scraping or culture of the blisters for examination in the laboratory. Varicella zoster virus tests detect either antibodies produced by the immune system in response to a VZV infection or detect the virus itself.