Which statement best describes the use of baseline cholinesterase monitoring in pest control work?

Which statement best describes the use of baseline cholinesterase monitoring in pest control work?

• A. It is used to establish a reference level for the individual and detect abnormal exposure
• B. It measures environmental pesticide residues
• C. It determines the minimum effective label rate
• D. It guides the choice of pesticide for rotation

Answer: (A)

Baseline cholinesterase monitoring creates a personal reference for a worker’s cholinesterase activity by drawing a blood sample when they have no exposure to cholinesterase-inhibiting pesticides. With this baseline, any future exposure that inhibits the enzyme can be detected as a decrease from the reference level. It helps identify abnormal exposure early, guiding medical evaluation and removal from exposure if necessary. It is not about measuring environmental pesticide residues, determining the minimum effective label rate, nor guiding pesticide rotation. The purpose is to protect worker health by catching exposure before symptoms develop.