A 'negative' result means the drug (or its metabolite) was not detected at or above the laboratory's established cutoff concentration. It does not definitively prove the drug was absent, only that it was below the detectable threshold for that test.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Joseph Soko – 101 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies