All the staff are very polite… All the staff are very polite… Grace Gutierrez DNA & Drug Screening Services 5 2020-02-05T11:25:22-08:00 Grace Gutierrez https://www.dnadrugscreening.com/testimonials/all-the-staff-are-very-polite/ Glenn Earls2020-02-05T11:25:22-08:00