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Elevated urinary phenol levels not related to benzene exposure
American Industrial Hygiene Association Journal
|November 1, 1975
Summary
Elevated urinary phenol from common medications is not harmful. Correcting these levels to a specific gravity of 1.024 is invalid, according to new research on phenol and phenyl salicylate.
Area of Science:
- Biochemistry
- Toxicology
- Pharmacology
Background:
- Urinary phenol levels are often monitored as a biomarker.
- Over-the-counter (OTC) medications can influence urinary phenol concentrations.
- Current methods for adjusting urinary phenol levels for hydration status are debated.
Observation:
- Two common OTC medications were identified as potential sources of elevated urinary phenol.
- Urinary phenol levels exceeding 75 mg/liter (ppm) were observed.
- The validity of correcting urinary phenol to a specific gravity of 1.024 was questioned.
Findings:
- Data suggests that correcting urinary phenol levels to a specific gravity of 1.024 is an invalid practice.
- Animal studies demonstrated that elevated urinary phenol levels resulting from phenyl salicylate ingestion do not appear to be harmful.
- Phenyl salicylate is a common ingredient in some OTC medications.
Implications:
- Clinical interpretation of urinary phenol levels may require reassessment.
- The study highlights the need for updated methodologies in assessing hydration status in relation to urinary biomarkers.
- Findings suggest that transient elevations in urinary phenol due to specific OTC medication use may not warrant clinical concern.