List of Quest Diagnostics Stores in Leesburg, VA Outlet Note Regular Brands Quest Diagnostics Virginia Leesburg Rating 4.7 based on 66 votes Products STD Testing Clinical Laboratory Services Drug Test Blood Test NameAddressPhone Name/Address/Phone Quest Diagnostics outlet - Leesburg 211 S King St, Ste C (703) 771-4251 Quest Diagnostics outlet - Leesburg 19415 Deerfield Ave, Ste 115-B (703) 729-6732 People Also Viewed