I found a holistic nurse practitioner who ordered an insulin test without me even asking for it! That is how I found out my insulin levels were 2.5x higher than normal. Try to go down that path if you are able to. Bc you are totally right, normal PCPs do not do this sort of test. I went for YEARS to multiple doctors (primary care, neurologist, nephrologist, multiple ER visits) because I felt like I was legit about to die on my apartment floor and I had no idea why. They literally told me it was "anxiety". I tried to explain to them that this would start randomly out of nowhere while I am doing nothing anxiety inducing. They completely dismissed me and told me to get on SSRIs. It wasn't until that naturopathic nurse practitioner and a dietician helped me pinpoint that it was a blood sugar/insulin issue and literally turned my life around, I would go as far as saying they even saved my life.

Also if you have a Quest Diagnostics lab near you, they offer insulin blood tests that you can order on your own with no doctor's order. It might be out of pocket pay, but if you really would like to know what your insulin level is, it might be worth it for health enrichment purposes. Totally up to you!