Simultaneous Analysis of 20 Steroid Hormones and High-Sensitivity Analysis of Estrogens

Importance of the Topic

Steroid hormones are essential signaling molecules involved in metabolism, reproduction, neural function, and vascular regulation. Simultaneous profiling of multiple steroids can reveal insights into disease mechanisms and support therapeutic development. Traditional immunoassays are limited by cross-reactivity and single-analyte requirements, motivating LC/MS/MS approaches.

Aims and Overview

This work presents a validated protocol for the simultaneous quantification of 20 steroid hormones in human blank serum using a Shimadzu LC/MS/MS method package, achieving complete analysis in 15 minutes and high sensitivity for estrogenic compounds through derivatization.

Methodology and Instrumentation

Sample preparation used solid-phase extraction to separate estrogen and non-estrogen fractions. Estrogens were derivatized with 2-fluoro-1-methylpyridinium p-toluenesulfonate to enhance detection sensitivity. Chromatographic separation was performed on a HALO ES-C18 column (100 mm×3 mm, 2.7 μm) with a 15-minute gradient elution on a Nexera X3 UHPLC. Detection utilized a Shimadzu LCMS-8060 triple quadrupole mass spectrometer in positive ESI and MRM mode under specified gas flows and temperature settings.

Main Results and Discussion

The method exhibited linear calibration ranges from 0.5 pg/mL to 10 ng/mL. Limits of quantitation for derivatized estradiol, estrone, and estriol were 1 pg/mL, 0.5 pg/mL, and 100 pg/mL, respectively. Accuracy of 70–130% and precision with CVs below 20% were achieved for all 20 hormones. A representative chromatogram demonstrated baseline separation within 15 minutes.

Benefits and Practical Applications

This approach enables rapid, high-throughput steroid profiling without the need for multiple immunoassay kits, eliminating antibody cross-reactivity issues. It is well suited to research in endocrinology, oncology, regenerative medicine, and quality control in clinical and pharmaceutical laboratories.

Future Trends and Potential Applications

Future developments may include automated online sample preparation, extension to additional steroid and metabolite panels, integration with high-resolution mass spectrometry for untargeted discovery, and application to clinical diagnostics, therapeutic monitoring, and environmental endocrine disruptor screening.

Conclusion

The Shimadzu LC/MS/MS method package provides a robust, sensitive, and efficient platform for the simultaneous quantification of 20 steroid hormones in serum in 15 minutes, offering a valuable tool for advanced research and routine analysis.

Used Instrumentation

• UHPLC: Shimadzu Nexera X3
• Column: HALO ES-C18, 100 mm×3 mm, 2.7 μm
• Mass Spectrometer: Shimadzu LCMS-8060 triple quadrupole
• Ionization: Electrospray (positive)
• Detection: Multiple Reaction Monitoring (MRM)