A typical workday for a DOT Specimen Collector involves greeting donors, verifying identification, explaining collection procedures, and accurately labeling and handling specimens according to federal guidelines. You may be scheduled at a clinic, mobile collection site, or travel to employer locations, and you'll be responsible for maintaining documentation and ensuring Chain of Custody compliance. The role often requires working independently, but you'll also coordinate with laboratory staff, employers, and transportation agencies. While the job is detail-oriented, it offers a structured environment and the opportunity to contribute to workplace safety by supporting drug-free policies.