I went 2 days 1/2 without water cause my doc appt was at 11. Had blood work done & protein and globulin levels were elevated. Is dehydration the cause?

Maybe/not. You ingest water value in the foods you eat or any fluid you drink. If you were making pee every 8 hours in the day before and of the tests were run, the effect of any water deprivation would be minimal. If you didn't pee during the 12 hrs prior to testing you might be dry enough to have a minimal elevation in some blood tests.