The major challenge is the 'lack of SRMs that could be used as external controls.' Unlike blood or urine, there is a shortage of certified, real-world hair reference materials with known, homogeneously distributed drug concentrations. This makes it difficult for labs to objectively verify the accuracy of their hair testing methods.

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