Final answer:
A Registered Pharmacist (RPh) must verify the feasibility to dispense a drug during a Drug Utilization Review (DUR) based on factors such as extraction conditions, validation of the assay, food effect on pharmacokinetics, and drug-drug interactions.
Step-by-step explanation:
During a Drug Utilization Review (DUR), a Registered Pharmacist (RPh) must verify the feasibility to dispense a drug based upon several factors:
- Finalization of extraction, chromatographic, and detection conditions based on anticipated concentrations following the lowest dose in humans.
- Full validation of the assay, including selectivity, linearity, LLOQ, LOD, accuracy, precision, recovery, and stability experiments.
- Investigation of the food effect on pharmacokinetics and selection of the best formulation for drug exposure.
- Verification of drug-drug interactions with commonly co-prescribed agents or with narrow safety window.
These considerations are crucial to ensure the safety and efficacy of the drug being dispensed.