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Serum and urine ionic fluoride: normal range in a nonexposed population

M Torra¹, M Rodamilans, J Corbella

¹Toxicology Unit, Hospital Clínic, Facultat de Medicina, Universitat de Barcelona, Spain.

Biological Trace Element Research

|October 9, 1998

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This study determined normal fluoride levels in Barcelona residents. Younger individuals had higher serum fluoride than older adults, with no sex differences observed.

Area of Science:

Environmental Health
Toxicology
Public Health

Background:

Fluoride is essential for dental health but excessive levels can be toxic.
Understanding population fluoride levels is crucial for public health assessments.
Previous data on fluoride status in the general population of Barcelona was limited.

Purpose of the Study:

To establish the normal range of serum and urine fluoride concentrations in the healthy adult population of Barcelona.
To investigate potential differences in fluoride levels based on age and sex.

Main Methods:

A random sample of 250 healthy subjects aged 15-90 years from Barcelona was recruited.
Serum and urine samples were collected and analyzed for fluoride ionic concentration using the Orion fluoride electrode system.

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Main Results:

Serum fluoride concentration ranged from 1 to 47 microg/L (mean 17.5 +/- 9.7 microg/L).
Urine fluoride concentration ranged from 156 to 1990 microg/24 h (mean 671 +/- 373 microg/24 h).
Younger individuals exhibited significantly higher mean serum fluoride levels compared to older individuals (p < 0.05).

Conclusions:

The study provides reference ranges for serum and urine fluoride in the Barcelona population.
Age is a significant factor influencing serum fluoride levels, with younger individuals showing higher concentrations.
No significant sex-related differences in fluoride levels were detected in this population.