Drug Test Resources
Essential resources for your drug test program.
Redwood Toxicology Laboratory's (RTL) Resource Library includes comprehensive information to help our clients understand all aspects of drug testing.
Do you have questions about specimen collection and chain of custody? Do you need more information on drug interactions and street names? The general drug information, listed below, can answer some of these questions.
Account Management Forms
Convenient account management forms for re-ordering drug testing supplies, reordering a test, and requesting updates to your account information.
Frequent Questions
The information found on this webpage can help answer many common questions, and assist you in managing a substance abuse testing program.
Lab Cutoffs/Methods
Accurate & reliable drug testing —The following is an explanation of RTL's screening and confirmation procedures/cutoff levels.
Specimen Collection
The manner in which specimens are collected and handled is very important. Specimens must be handled and controlled by collection site personnel throughout the collection process.
Labeling & Shipping
The following is a guide on how to properly label and package specimens being sent to RTL for screening & confirmation testing.
Result Reporting and Collection Management
RTL's objective is to provide its clients with all the tools possible to help prevent drug abuse. Reliable and useful toxicology reports are essential to this objective.
Device Resources
RTL's objective is to provide its clients with all the tools possible to help deter and prevent drug abuse. Reliable and useful on-site screening device resources are essential to this objective.
Collection Network
If you are a collection site or TPA agency and wish to work directly with Redwood Toxicology Laboratory, please join our referral network.
Drug Information
This information will assist you in understanding specific drugs of abuse and how Redwood Toxicology Laboratory's wide range of urine and oral fluid screening programs test for each drug.
How to read your Toxicology Report »
Non-Clinical Test Requisition Form video »