Confirmatory exams can be performed on various biological samples, including:
- Blood: Offers a current snapshot of what substances are circulating in the body. - Urine: Commonly used for drug testing due to its non-invasive collection method. - Hair: Can provide a long-term history of substance use or exposure. - Saliva: Useful for detecting recent drug use. - Tissue: Sometimes used in post-mortem toxicology to determine cause of death.
