Polypharmacy as a reason for misinterpreting laboratory results in the elderly

Area of Science:

• Clinical Biochemistry
• Laboratory Medicine
• Pharmacology

Background:

• Clinical biochemistry laboratories are vital for patient diagnosis, treatment monitoring, and prognoses.
• Technological advancements have improved autoanalyzer performance, but preanalytical errors remain a significant issue.
• Medications are controllable variables in the preanalytical phase, impacting laboratory test results.

Purpose of the Study:

• To highlight the influence of medications on clinical laboratory test results.
• To address the complexities of drug effects and interactions, particularly in geriatric populations with polypharmacy.
• To emphasize the need for systematic management of laboratory abnormalities in patients on multiple medications.

Main Methods:

• Review of literature on drug effects in laboratory medicine.
• Analysis of how medications, including drug-drug interactions, affect laboratory parameters.
• Focus on the geriatric population and the challenges of polypharmacy.

Main Results:

• Drugs can cause dose-dependent and sometimes unexpected changes in laboratory test results.
• Polypharmacy in the elderly increases the risk of adverse drug reactions and drug-drug interactions.
• Altered laboratory values due to polypharmacy can affect different organ systems.

Conclusions:

• Managing laboratory abnormalities in polypharmacy requires a systematic approach.
• Key management strategies include comprehensive medication history, chronological correlation, clinical judgment, and interdisciplinary collaboration.
• Accurate interpretation of laboratory results necessitates consideration of medication effects.