Just of note: There are many point of care testing kits out there that are considerably unreliable.
It could be that your doctor is not doing some testing because he/she cannot justify it to the insurance if you do not have a diagnosis to support it, which they have to be able to justify it now so you don't have to pay for it. Unless you are willing to pay out of pocket for the test(s), which some are quite expensive, he/she may be trying to spare you that if does not think it is necessary. For example the one women's hormone panel in our lab out-of-pocket would be $2900 for example.
It may be worth it to you to get it done still depending on what it is, contact your lab or several labs to price compare finding out the best rate/ cost, and contact your doc back if so.