• Aegis Sciences Corporation makers of the Zero Tolerance Drug Testing (ZTDT) products and services for individuals, organizations, and businesses.

• American Lab Service certified SAMHSA/DOT/HHS laboratory that supplies chain of custody forms, collection cups, lab packs, and pre-paid airway bills to support workplace drug testing programs.

• American Toxicology Institute, Inc. testing of illegal drugs in hair, urine or blood for workplace and forensic purposes.

• Columbia Laboratory Services full-service provider for drug, alcohol, and paternity testing equipment and supplies.

• Drug Detection Services, Inc. confidential substance abuse testing for corporate, legal, or personal applications.

• Friends Medical Laboratory, Inc.

• High Standards Products Corporation reference standards and test kit for drugs of abuse testing, clinical toxicology, and therapeutic drug monitoring.

• Medtox Scientific Comprehensive toxicology company specializing in workplace, on-site, biological, and therapeutic testing.

• Omega Labs services include hair analysis for drug testing.

• Pacific Toxicology Laboratories offering biological monitoring, drug testing, and medical surveillance.

• PharmChem independent laboratory providing integrated drug testing services to corporate and governmental clients.

• Psychemedics Corporation Drug testing company using hair samples for detecting drugs of abuse.

• Sciteck reference laboratory offering nationwide drug testing services. Diagnostic division manufactures clinical chemistry and point of care products.