| Business | Phone |
| Gamma Healthcare 115 Orendorff Ave, Harrison 72601 | (870) 741-3106 |
| Quest Diagnostics Inc 702 N Main St # 1-A, Harrison 72601 | (870) 741-9400 |
| Laboratory Corp Of America 406 N Willow St, Harrison 72601 | (870) 743-9538 |
| Laboratory Corp Of America 520 N Spring St, Harrison 72601 | (870) 741-6460 |