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Redwood Toxicology Laboratory Home


Laboratory Testing Cut-offs & Methods

DRUG TESTING CUT-OFF LEVELS AND TEST METHODOLOGY

The following is an explanation of RTL's screening and confirmation procedures/cut-off levels. The analytical methods used by RTL are scientifically accepted and approved by the U.S. Department of Health and Human Services.

Our laboratory performs drug and alcohol testing in accordance with strict forensic standards and scientifically accepted methods. Testing is performed by a highly educated, experienced staff using state-of-the-art equipment under the scrutiny of state and federal agencies. We'll find out.

  Drugs of Abuse Testing-Urine Screening and Confirmation Cut-off Levels/Methods     
  Drugs of Abuse Testing-Saliva Screening and Confirmation Cut-off Levels/Methods     
  Comprehensive Drug Testing Screening and Confirmation Cut-off Levels/Methods     

To learn more about RTL's laboratory drug tests call:   800-255-2159