Serum IgE levels in healthy children quantified by a sandwich technique (PRIST)

Area of Science:

• Pediatric immunology
• Allergy research
• Clinical diagnostics

Background:

• Serum immunoglobulin E (IgE) levels are crucial biomarkers in pediatric allergy.
• Establishing accurate reference ranges for IgE in healthy children is essential for diagnosing atopic conditions.
• Previous studies may have included children with subclinical atopy, potentially skewing reference values.

Purpose of the Study:

• To determine normative serum IgE levels in a carefully selected cohort of healthy children aged 0-14 years.
• To establish a reliable reference standard for IgE quantification in pediatric populations.
• To investigate factors influencing IgE levels, including methodology and subject selection.

Main Methods:

• Utilized a paper disc radioimmunoassay technique (PRIST) for serum IgE estimation.
• Implemented stringent selection criteria to exclude children with potential atopic disease or family history.
• Analyzed serum samples from 184 healthy children, aged 0-14 years, after excluding 42 potentially atopic individuals.

Main Results:

• Serum IgE levels in the selected cohort were found to be lower than those reported in prior investigations.
• The refined PRIST technique and rigorous case selection contributed to the observed lower IgE values.
• The study group of 184 children is considered representative of the normal pediatric population for reference purposes.

Conclusions:

• The study provides a more accurate reference range for serum IgE in healthy children.
• Methodological refinements, particularly in case selection and assay technique, are critical for accurate IgE assessment.
• These findings support the use of this refined methodology for future pediatric IgE reference studies.