| Holbrook | Suffolk County | Nassau County | The Hamptons | 
| ENZO Clinical Laboratory 233 Union Ave Holbrook NY, 11741 (631) 467-0300 | Prime Diagnostics Institute 4250 Veterans Memorial Hwy Holbrook NY, 11741 (631) 650-6900 | ||
| Sunrise Medical Laboratories - Patchogue 1 E Roe Blvd Holbrook NY, 11741 (631) 289-2342 | |||