It sounds like you had a simplistic version of autonomic testing. I think maybe he was doing some very basic tests to see if a more specific autonomic battery was necessary.

Typically someone with autonomic dysfunction will have increases in heart rate and/or drops in BP upon standing. However, as anyone with autonomic neuropathy knows, symptoms don't occur EVERY time you stand. So one crude test should not be the definitive answer. If you continue to have symptoms of autonomic dysfunction, you should see a neurologist for a full battery of testing (tilt table, QSART, sweat test, 24 hour BP, 48 hour holter, gastric empty test, etc).

What sort of symptoms are you having? Is you diabetes properly controlled? What was your last A1C?