Is it possible to fail a tilt table if your symptoms are lesser?

\^ My doctor and everyone thought i had POTS so I had tilt table done recently and the results say they are normal not even OH

Now the interesting thing is that the past few months my symptoms have gotten better and I have done tests where I have checked my heart rate before and they are always showing atleast OH but today everything looks normal and I was confused why

I even was so close to passing out and felt dizzy yet everything seems good like maybe i have another issue but like is it possible for it not show up because my symptoms are more manageable?

Because my heart rate goes up a lot this i do know but at the test it didn't at all and I am confused