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[Testicular measurement by test size orchidometer].

¹Department of Urology, Toho University School of Medicine.

Hinyokika Kiyo. Acta Urologica Japonica

|November 1, 1988

Summary

This study measured testicular volume in 891 subjects using Test Size equipment. Results show gradual growth in childhood, rapid increase in adolescence, and peak volume in early adulthood, validating the method for accurate testicular volume assessment.

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Area of Science:

Andrology
Pediatric Endocrinology
Medical Metrology

Background:

Accurate testicular volume measurement is crucial for assessing male reproductive health and diagnosing conditions.
Existing methods for testicular volume assessment have limitations in precision and accessibility.
The Test Size device offers a novel approach to testicular volume measurement.

Purpose of the Study:

To evaluate the accuracy of the Test Size device for measuring testicular volume across a wide age range.
To establish normative data for testicular volume development from infancy to adulthood.
To compare Test Size measurements with ultrasonographic and direct isolated testis volume measurements.

Main Methods:

Testicular volume was measured in 1782 testes from 891 male subjects aged 0-86 years using the Test Size device.
Testicular volume was also assessed using ultrasonography and direct measurement of isolated testes in a subset of subjects.
Developmental trends in testicular volume were analyzed based on age.

Main Results:

Testicular volume showed gradual growth from 0-8 years, a rapid increase around 12-13 years, and peaked between 18-19 years.
The Test Size device demonstrated a correlation index of 0.608 when compared to actual isolated testis volume.
Ultrasonographic measurements showed a correlation index of 1.098 when compared to actual isolated testis volume.

Conclusions:

The Test Size device provides a reliable method for determining authentic testicular volume.
The study establishes age-specific reference ranges for testicular volume, aiding in clinical assessment.
This metrological equipment is suitable for accurate testicular volume assessment in clinical and research settings.

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