Testing Locations » Connecticut » Southington CT » Quest Diagnostics – Quest Diagnostics 360-1 North Main St – Employer Drug Testing Not Offered Quest Diagnostics – Quest Diagnostics 360-1 North Main St – Employer Drug Testing Not Offered Quest Diagnostics – Quest Diagnostics 360-1 North Main St – Employer Drug Testing Not Offered360-1 North Main StreetSuite 1Southington, CT 06489-0000 United States Was HOCC Diagnostic Center