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Challenges and improvements in testosterone and estradiol testing.

Hubert W Vesper¹, Julianne C Botelho, Yuesong Wang

¹Clinical Chemistry Branch, Division of Laboratory Sciences, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.

Asian Journal of Andrology

|January 11, 2014

Summary

This summary is machine-generated.

Steroid hormone assays lack accuracy and precision, impacting patient care and research. The CDC Hormone Standardization Program is improving testosterone and estradiol measurements, reducing variability and enhancing reliability.

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Area of Science:

Endocrinology
Clinical Chemistry
Laboratory Medicine

Background:

Accurate and precise steroid hormone assays are crucial for clinical diagnostics, public health surveillance, and research applications.
Current testosterone and estradiol measurements often exhibit significant variability, hindering inter-laboratory comparability despite technological advancements.
Measurement inaccuracies stem from issues like non-uniform assay calibration and lack of specificity.

Purpose of the Study:

To review major factors contributing to steroid hormone assay variability.
To highlight recent initiatives by the US Centers for Disease Control and Prevention (CDC) to enhance assay performance.
To discuss the impact of assay variability on clinical and research outcomes.

Main Methods:

Review of literature on steroid hormone assay performance and variability.
Analysis of data from the CDC Hormone Standardization (HoSt) Program.
Comparison of different measurement technologies and reference methods.

Main Results:

Steroid hormone assays, particularly for testosterone and estradiol, frequently fail to meet required accuracy and precision standards.
Within-assay variability remains high, especially at low concentrations of the analyte.
The CDC HoSt Program demonstrated a 50% reduction in mean absolute bias for mass spectrometry assays from 2007 to 2011.

Conclusions:

Non-uniform calibration and poor assay specificity are key drivers of steroid hormone measurement variability.
The CDC HoSt Program is effectively improving the accuracy and precision of clinical steroid hormone assays.
Standardization efforts are essential for ensuring reliable and comparable steroid hormone measurements across diverse applications.