@everettcatlin, Diagnosing PMR is a process of eliminating other possible conditions and no specific test for PMR. That and there are quite a few other conditions that mimic PMR symptoms.

"Diagnosis. There's no specific test to diagnose polymyalgia rheumatica. Your doctor will make a diagnosis after listening to you talk about the history of your symptoms and by carrying out a physical examination. You'll also have blood tests to check for any inflammation in your body, and to rule out other conditions."
--- Polymyalgia rheumatica (PMR) | Causes, symptoms, treatments: https://www.versusarthritis.org/about-arthritis/conditions/polymyalgia-rheumatica-pmr/.

--- Diseases that mimic polymyalgia rheumatica (PMR): https://www.medicalnewstoday.com/articles/diseases-that-mimic-polymyalgia-rheumatica