San Marcos, Texas Drug Test Services


San Marcos, Texas Drug Screening & Workplace Testing Services

Why Choose WSI in San Marcos, Texas?

Our Services in San Marcos, Texas

Drug Test

Random Management Programs

Physical Exams

Specialized Testing

Expert Training Programs

Background Check Services

Core Services


Reason for Test


  • Pre-Employment Test
  • Random Test
  • Post-Accident Test
  • Reasonable Suspicion Test
  • Return to Duty Test
  • Follow-up Test
  • Periodic Test

Physicals & Health Testing


  • DOT Physical
  • Physical
    • Respirator Physicals: For workers who handle hazardous substances.
    • Pulmonary Function Test
    • OSHA Medical Questionnaire
    • Lift Test
    • Chest X-Rays
    • Kraus Weber
    • EKG
    • Vision Test
      • Vision Snellen
      • Vision Titmus
      • Vision Ishihara
      • Vision Jager
  • Titer Test
    • Hepatitis A
    • Hepatitis B
    • Hepatitis C
    • TransFERRON Gold Tuberculosis
    • Measles
  • Wellness Testing

Workplace Programs and Training


Additional Services


  • FMCSA Clearinghouse Support
  • Background Checks
    • County Background Search Check
    • State Background Search Check
    • Federal Background Search Check
    • Name Alias Background Search Check
    • Sex Offender Background Search Check
    • OIG Background Search Check
    • SSN Trace Background Search Check
    • Global Terror Watch List Background Search Check
    • Adverse Action Background Search Check Assistance

FMCSA Clearinghouse Compliance Support

Interested? Contact Us

Our Locations in San Marcos, Texas

NameAddressCityStateZIP Code
WSI Testing Location1228 Highway 123 San Marcos Texas 78666
WSI Testing Location1305 WONDER WORLD DR STE 301 San Marcos Texas 78666
WSI Testing Location155 Wonder World Drive San Marcos Texas 78666
WSI Testing Location1941 S IH 35 San Marcos Texas 78666
WSI Testing Location301 North Guadalupe Street San Marcos Texas 78666
WSI Testing Location900 BUGGS LANE San Marcos Texas 78666