Q. A 65-year-old man presents to your clinic with low back pain. On physical examination, you note significant lower extremity pitting edema. You proceed with some basic serologies and identify hypercalcemia. This prompts you to check a serum protein electrophoresis, which demonstrates an M-spike. You are concerned about these findings so you refer the patient to a nephrologist, who asks for the urinalysis results, but you never ordered a urinalysis on this patient. Which of the following would you have expected to see on the urinalysis?