Detailed Instructions: In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Q: Question: Point out the correct answer in relation to the monitoring of plasma drug concentrations:
Options: <0> Allergy reactions are related to the dose administered. <1> The extraction of the blood sample must be done once the balance of drug distribution in the organism has been reached. <2> The information provided by the analytical determination of plasma concentration is sufficient to perform the dosage individualization. <3> Only the immunoassay methods are valid for carrying out the analytical determination of the blood samples. <4> It must be done for all drugs that are administered intravenously.
A:
pharmacology