| Suffolk County | Nassau County | The Hamptons | 
| Mineola Same Day HIV/STD Testing 156 First Street Lower Level Mineola NY, 11501 (516) 780-0440 | North Shore Lij Health System Laboratories 10 Nevada Dr New Hyde Park NY, 11042 (516) 719-1100 | ||
| North Shore Lij Health System Laboratory 1 Hollow Ln New Hyde Park NY, 11042 (516) 365-0916 | North Shore Medical Laboratory 463 Willis Ave Williston Park NY, 11596 (516) 739-5227 Visit Website | ||
| Northshore Health Systems Laboratory 800 Northern Blvd Great Neck NY, 11021 (516) 869-8462 | NTD Laboratories INC 80 Ruland Rd Ste 1 Melville NY, 11747 (631) 425-0800 Visit Website | ||
| Professional Laboratory Systems 137 Herricks Rd New Hyde Park NY, 11040 (516) 877-9000 | Quest Diagnostic 1129 Northern Blvd Manhasset NY, 11030 (516) 869-8273 Visit Website | ||
| Quest Diagnostic 154 Commack Rd Commack NY, 11725 (631) 499-0266 Visit Website | Quest Diagnostics 180 E Pulaski Rd Huntington Station NY, 11746 (516) 677-7726 Visit Website | ||
| Quest Diagnostics 3 School St Glen Cove NY, 11542 (516) 676-1373 Visit Website | Quest Diagnostics 3 Village Sq Glen Cove NY, 11542 (516) 677-7707 Visit Website | ||
| Quest Diagnostics 265 Jericho Tpke Floral Park NY, 11001 (516) 677-7704 Visit Website | Quest Diagnostics 195 E Main St Huntington NY, 11743 (516) 677-7725 Visit Website | ||
| Quest Diagnostics 9 Brooksite Dr Smithtown NY, 11787 (631) 677-7735 Visit Website | Quest Diagnostics 4276 Hempstead Tpke Bethpage NY, 11714 (516) 677-7701 Visit Website | ||
| Quest Diagnostics 233 Main St West Sayville NY, 11796 (516) 677-7734 Visit Website | Quest Diagnostics Heritage East Setauket NY, 11733 (516) 677-7722 Visit Website | ||
| Quest Diagnostics 1165 Northern Blvd Manhasset NY, 11030 (516) 677-7711 Visit Website | Quest Diagnostics 570 Expressway Dr S Medford NY, 11763 (631) 447-0748 Visit Website | ||