Reoccurring Miscarriage Testing

Hi Ladies.

I was just wondering what testing you were able to get out of your obgyn office for reoccurring miscarriages before going to a reproductive endocrinologist?? My doctor did the blood work and made a referral to the RE but insurance doesn’t even cover the consult. Of course I’m willing to put the money into it to get answers, but just seeing if there’s any loop holes that I can get some of my other testing covered before hand?