Cocaine metabolite concentration (mass concentration) in urine

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms suggestive of cocaine use, such as anxiety, rapid heartbeat, or changes in behavior. It can also be used in workplace drug screening, legal proceedings, or during treatment for substance use disorders.

What to Expect Before the Test

No special preparation is needed. You’ll provide a urine sample in a private setting, typically collected in a clinic or lab. Avoiding certain medications or substances (like some painkillers) before testing may be advised by your provider.

What the Test Results Mean

Positive results indicate recent cocaine use, as cocaine breaks down into metabolites detectable in urine for several days. Negative results mean no detectable metabolites were found in your sample. Interpretation depends on clinical context, such as timing of use or prior drug history.

Common Causes of Abnormal Results

False positives can occur with certain medications (e.g., some antidepressants, cold remedies) or from exposure to secondhand smoke. False negatives may happen if the test was taken too early after use or if the sample was improperly collected.