| Domain | drugtest.co — exact-match keyword, .co premium TLD, registered through transferable registrar | 1 |
| Test-type hubs | Urine · Saliva (oral fluid) · Hair · Blood · Breath/alcohol — each with detection windows, methodology, federal status | 5 |
| Panel reference pages | 5-panel · 10-panel · 4-panel · DOT 5-panel (including July 2025 fentanyl update) | 4 |
| Detection-window pages | THC · Cocaine · Amphetamines · Opioids · Benzodiazepines · Barbiturates · PCP · Methadone · Fentanyl · Alcohol | 10 |
| Substance profiles | Educational, non-instructional profiles for all panel substances | 9 |
| Glossary entries | Chain-of-custody, immunoassay, GC-MS, LC-MS/MS, MRO, SAMHSA, cutoff, EtG, THC-COOH, benzoylecgonine, WADA, USADA, etc. | 24 |
| Long-form guides | Complete detection windows · 2026 employer compliance · False positives & cross-reactivity · Screening vs. confirmation (GC-MS/LC-MS/MS) | 4 |
| Workplace hub | DOT vs non-DOT · Building a testing program · MRO & confirmation · Cannabis & state law | 5 |
| At-home hub | How at-home tests work · Reading results · Talking to a teen | 4 |
| Comparison pages | 5-panel vs 10-panel · Urine vs hair | 2 |
| Author profiles | Editorial Team · Meredith Okonkwo, MD, MRO · Jordan Park, JD · Rae Bennett, MSN, RN — each E-E-A-T-ready | 4 |
| Editorial & legal | About · Editorial policy · Medical disclaimer · Privacy · Terms · Affiliate disclosure · Contact | 7 |
| Interactive tools | "Find the right test" guided flow · "Detection Windows Explorer" filterable matrix | 2 |
| Discovery surfaces | sitemap-index.xml, sitemap-0.xml, robots.txt, rss.xml, llms.txt, llms-full.txt, site.webmanifest | 7 |
| Brand & design system | Wordmark, favicon, color tokens, type system (Fraunces / Hanken Grotesk / IBM Plex Mono), OG image template | — |
| Source & build | Full Astro source repository, build scripts, deployment-ready static output, Pagefind search index | — |