Biological monitoring can be divided into (a) monitoring of exposure, and (b) monitoring of effect, for which indicators of internal dose and of effect are used respectively.

Biological monitoring can be divided into (a) monitoring of exposure, and (b) monitoring of effect, for which indicators of internal dose and of effect are used respectively.

• A. False
• B. Not sure
• C. It depends
• D. True

Answer: (D)

Biological monitoring aims to assess both how much of a hazardous agent has entered the body and whether it has produced a measurable biological response. When you monitor exposure, you look at indicators of internal dose—such as the chemical or its metabolite levels in blood or urine—reflecting the amount absorbed. When you monitor effect, you use biomarkers that indicate a biological response to that exposure, like enzyme inhibition or other early effect markers, showing potential health impact. Because these two aspects—internal dose and effect—form the standard framework for biological monitoring, the statement is true. While real-world nuances exist (kinetics, timing, and context can influence indicators), the basic division remains widely accepted.

Biological monitoring aims to assess both how much of a hazardous agent has entered the body and whether it has produced a measurable biological response. When you monitor exposure, you look at indicators of internal dose—such as the chemical or its metabolite levels in blood or urine—reflecting the amount absorbed. When you monitor effect, you use biomarkers that indicate a biological response to that exposure, like enzyme inhibition or other early effect markers, showing potential health impact. Because these two aspects—internal dose and effect—form the standard framework for biological monitoring, the statement is true. While real-world nuances exist (kinetics, timing, and context can influence indicators), the basic division remains widely accepted.