THC - Substances or Conditions which can cause false positives
- Dronabinol (Marinol)
- Ibuprofen; (Advil, Nuprin, Motrin, Excedrin IB etc)
- Ketoprofen (Orudis KT)
- Kidney infection (Kidney disease, diabetes) Liver Disease
- Naproxen (Aleve)
- Promethazine (Phenergan, Promethegan)
- Riboflavin (B2, Hempseed Oil)
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