Would dipping a preg test in a urine sample take the hcg away?

Allyson

Tomorrow im getting a urine test done to confirm my pregnancy. And as obvious as my tests are, I wanted to take one before we go to see the lines again. But i was curious as to if i do take the test 4 hours from when i do the urine test and drink no water, will the hcg be as high as it was in the morning? Since its a walk in clinic i was gonna sneak in a first response and clearblue test to show my mom while we are there while i pee in the little container they have there. Yes im a little crazy