| Business | Phone |
| Dynacare Laboratories 515 W 12th St, Texarkana 75501 | (903) 794-0678 |
| Dynacare Louisiana 520 W 12th St, Texarkana 75501 | (903) 793-0231 |
| Lab Corp Of America 3505 Summerhill Rd 3, Texarkana 75503 | (903) 792-2883 |
| Laboratory Corp Of America 5002 Cowhorn Creek Rd, Texarkana 75503 | (903) 831-4970 |
| Lcai 2605 Texas Blvd, Texarkana 75503 | (903) 791-1763 |
| Quest Diagnostics Inc 2602 Saint Michael Dr, Texarkana 75503 | (903) 223-5916 |
| Lab Corp Texarkana 75501 | (903) 832-3677 |
| Lab Corp 1730 Galleria Oaks Dr, Texarkana 75503 | (903) 832-4087 |
| Laboratory Corp Of America 3505 Summerhill Rd, Texarkana 75503 | (903) 793-1368 |