Testing Locations » Illinois » Dekalb IL » Quest Diagnostics – Dekalb Sycamore Quest Diagnostics – Dekalb Sycamore Quest Diagnostics – Dekalb Sycamore3244 Sycamore RdUnit BDekalb, IL 60115-4941 United States Located at the NE Corner of Bethany & Sycamore Roads. Shopping Center with Dynamic Tan.
