Cocaine concentration in saliva (mass concentration)

Why This Test Is Done

Your healthcare provider may order this test if you’re suspected of recent cocaine use, as part of a substance use evaluation, or during a workplace or legal screening. Saliva is a convenient specimen because it reflects recent drug exposure more accurately than blood.

How the Test Works

The test uses a specialized immunoassay (a lab method that detects specific substances) to measure cocaine and its metabolites in your saliva. Results are typically reported in mass concentration units, indicating how much cocaine was present.

What to Expect Before the Test

No special preparation is needed. You’ll provide a saliva sample, often collected by spitting into a collection device. Avoid chewing gum, smoking, or eating strongly flavored foods for a few hours before testing to reduce interference.

What the Results Mean

Results are qualitative (yes/no) or semi-quantitative, meaning they indicate presence but not exact amounts. A positive result suggests recent cocaine use, but it doesn’t confirm recent use alone—context (e.g., timing, clinical history) is needed.