All Quest Diagnostics Locations - Texas
- Abilene
- Alice
- Allen
- Amarillo
- Arlington
- Austin
- Azle
- Baytown
- Beaumont
- Bedford
- Beeville
- Bellaire
- Boerne
- Bulverde
- Carrollton
- Cleburne
- Conroe
- Coppell
- Corpus Christi
- Dallas
- Denton
- Desoto
- Edinburg
- El Paso
- Fort Worth
- Friendswood
- Frisco
- Garland
- Granbury
- Grand Prairie
- Grapevine
- Greenville
- Harlingen
- Houston
- Humble
- Irving
- Jacksonville
- Katy
- Keller
- Killeen
- Kingsville
- Kingwood
- La Marque
- Lake Jackson
- Lake Worth
- Lampasas
- Laredo
- Leander
- Lewisville
- Live Oak
- Longview
- Lubbock
- Lufkin
- Mansfield
- Mcallen
- Mckinney
- Mesquite
- Midlothian
- Nacogdoches
- Nassau Bay
- Odessa
- Orange
- Paris
- Pasadena
- Plano
- Pleasanton
- Port Arthur
- Richardson
- Richmond
- Rockport
- Rockwall
- Round Rock
- Rowlett
- San Angelo
- San Antonio
- Sherman
- Sugar Land
- Texarkana
- Texas City
- The Woodlands
- Tomball
- Tyler
- Waco
- Weatherford
- Webster
- Weslaco