Forensic Chemistry,science homework help

Forensic chemistry;

What test would the chemist perform to check for the presence of glucose in the soft drink?

In the attempted murder trial that followed later, the lawyer for the accused argued that the glucose in the glass was placed there accidentally when the accused mistakenly added sugar from the kitchen to the glass instead of his coffee. The forensic scientist was called on to show that the sugar added to coffee would not have given the same test results as the glucose in the glass. What chemical evidence would the chemist present to support this statement?