Testing Locations » California » Merced CA » Quest Diagnostics – Merced West Childs Avenue – Employer Drug Testing Not Offered Quest Diagnostics – Merced West Childs Avenue – Employer Drug Testing Not Offered Quest Diagnostics – Merced West Childs Avenue – Employer Drug Testing Not Offered857 W Childs AveMerced, CA 95341-6862 United States .Golden Valley Health Centerrn