Final answer:
The test that confirms the presence of Bence-Jones proteinuria is the heat coagulation test.
Step-by-step explanation:
The test that confirms the presence of Bence-Jones proteinuria is the heat coagulation test. Bence-Jones proteins are special types of proteins that contain abnormal light chains of the immunoglobulin molecules. When the urine is heated to 60 °C, a coagulum appears and on further heating, it dissolves, indicating the presence of Bence-Jones proteinuria.