Why Do Globulin Values Differ Between Blood And Urine?

I had an odd lab value set that I wanted to ask about. Is this something to be concerned about? Also, why are globulins so different in blood v urine? Blood work: Albumin: 5 Globulin: 1.8 A/G Ratio: 2.8 Urine sample: Albumin: 5 Globulin: 1 A/G Ratio: 5