Preclinical challenges in steroid analysis of human samples

Area of Science:

• Clinical Chemistry
• Endocrinology
• Analytical Chemistry

Background:

• Steroid hormone analysis faces challenges due to biological variability (age, sex, diurnal rhythms) and technical limitations of immunoassays (cross-reactivity, limited analytical range).
• Immunoassays are common in clinical labs for steroid determination due to simplicity, speed, and cost-effectiveness for high-volume testing.

Purpose of the Study:

• To review biological and technical factors affecting steroid hormone analysis.
• To discuss liquid chromatography-tandem mass spectrometry (LC-MS/MS) as a superior alternative for steroid analysis in clinical settings.

Main Methods:

• Review of biological influencing factors in steroid secretion and metabolism.
• Analysis of technical limitations in direct immunoassay methods for steroids.
• Evaluation of mass spectrometry-based platforms, specifically LC-MS/MS, for steroid profiling.

Main Results:

• Biological factors significantly impact steroid reference ranges and clinical interpretation.
• Immunoassays can suffer from inaccuracies due to cross-reactivity and limited analytical performance.
• LC-MS/MS presents a highly sensitive and specific analytical approach with potential for standardization.

Conclusions:

• Standardization and harmonization of steroid measurements are crucial for reliable clinical interpretation.
• LC-MS/MS is a promising high-throughput platform for routine steroid analysis, offering improved accuracy and specificity over immunoassays.