Anyone request a spinal tap?

I’m sure many have seen my post before. I’m tired of having the doctors not take me seriously or try to cash grab. I have had 3 babies and I have previously had 4 spinal taps. Not worried about getting another… Just curious if I got this done would it help eliminate all the bs when switching doctors? I’m not trying to stop my medications again for another sleep test. That’s the most ridiculous thing I have heard. I’m sick of doctors trying to cash grab at me like I’m a piggy bank before of this disease. So anyone here diagnosed by spinal tap ever had any one question the results? Or try to make you redo it?