Efavirenz Urine Test | Medical Algorithm

Evaluation

Are you evaluating the results of a urine drug screening test?

Yes

Was the screening test positive for benzodiazepine and/or THC?

Yes

Was the confirmation test (GC-MS, other) positive for the drug(s)?

Yes

Was the patient taking efavirenz at the time of urine drug test?

Yes

Results

Please fill out required fields.

Results Interpretation and Description References Next Steps

Data complete?

Evaluation appropriate?

Number of reasons to suspect a false positive urine drug test due to efavirenz

Does the patient have a false positive urine drug test probably due to efavirenz?

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Laboratory Tests
Other Testing
- False Positive Immunoassay for Tetrahydrocannabinol (THC) with Pantoprazole
Criteria For Diagnosis
- Criteria for Suspicion of Employee Under Influence of Drugs or Alcohol

Specialty

Toxicology
Emergency Medicine
Critical Care

Objective

laboratory tests

ICD-10

B24 - Unspecified human immunodeficiency virus [HIV] disease

Positive Urine Screening Test for Benzodiazepine or THC in HIV-Positive Patient Taking Efavirenz

Purpose: To identify a patient with a false-positive urine drug test for benzodiazepines and/or THC due to therapy with efavirenz.