Test Services

Home / Test Services

Urine Testing Services

Redwood Toxicology Laboratory utilizes the most sophisticated, sensitive and specific equipment and technology available to screen, confirm and quantitate drugs of abuse in urine.

Oral Fluid Testing Services

Oral fluids testing is gaining popularity with many programs that require easy, gender-neutral specimen collection combined with the accuracy of lab testing. We are proud of our products, services, people and processes, and never stop working to ensure your drug screening program is a success.

Pain & Addiction Management – Drug Testing

Many substances that are prescribed for pain management and other legitimate indications are found to ….

Therapeutic Drug Monitoring

Therapeutic drug monitoring (TDM) refers to the clinical practice of measuring drugs and/or metabolites in blood or serum/plasma at a specific time point to determine if a patient’s….

Emergency Toxicology

Emergency toxicology focuses on the diagnosis, management, and prevention of poisonings due to drugs, occupational and environmental toxins, and biological agents. Examples of exposures…..



We offer a full menu of toxicology tests in three different matrices to assess compliance with prescribed medications.

Our urine toxicology menu includes a comprehensive list of screening and confirmation tests. Urine specimens will provide the best matrix for detecting prescription and illicit drug use, with longer detection windows and higher drug concentrations, as well as ease of collection. We take pride in our 1-day turn-around time for urine toxicology reports.Our oral fluid toxicology menu offers an easy alternative to urine testing for patients that are unable to produce a urine specimen. However, oral fluid detection windows are much shorter than urine detection windows. It is important to understand the limitations of this testing matrix. Oral fluid toxicology reports also have a 1-day turn-around time.

Our plasma toxicology menu offers steady state analysis and blood baseline testing. Steady state analysis measures the amount of free drug in the blood, providing insight into how much of the prescribed medications the patient is taking. Blood baseline testing measures the amount of total drug in the blood, providing insight into medication tolerance. Plasma reports are available within 5 business days..