Drug Testing in Houston, Texas — 2026 Guide

This directory covers drug testing providers across Houston and surrounding Greater Houston. 134 providers are currently listed. Browse by zip code, neighborhood, or highway exit.

By ZIP code:

• 77015 — Channelview / I-10 East Refineries
• 77029 — Galena Park / Ship Channel
• 77039 — Greenspoint / I-45 North
• 77049 — Channelview / I-10 Industrial
• 77060 — Greenspoint / Beltway 8 North
• 77073 — North Houston / I-45 Freight
• 77078 — Pleasantville / Ship Channel
• 77087 — South Houston / US-90
• 77093 — North Houston / I-45
• 77094 — Katy / I-10 West Energy Corridor
• 77095 — Katy / I-10 Distribution
• 77501 — Pasadena / Petrochemical Row
• 77502 — Pasadena / La Porte Road
• 77520 — Baytown / I-10 East Industrial
• 77521 — Baytown / Petro TA Corridor
• 77530 — Channelview / Ship Channel Access
• 77546 — Friendswood / I-45 South
• 77578 — Pearland / Beltway 8 South
• 77449 — Katy / I-10 West Logistics
• 77450 — Katy West / Grand Parkway
• 77338 — Humble / IAH Freight
• 77396 — Humble / I-69 Northeast

By neighborhood:

• Baytown Industrial District
• Pasadena / La Porte Petrochemical

By highway exit:

• I-69 Exit Baytown (Baytown / I-10 Junction)

By highway corridor:

• I-45 North: Houston to Dallas