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Erect penile length measurement methods

Different methods for measuring erect penile length, including bone-pressed and suprapubic skin measurements

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Jan 27, 2026
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What are the typical ranges and prediction errors when estimating erect length from flaccid size?

Estimating from a flaccid measurement is imprecise: shows flaccid length correlates weakly with erect length, while stretched (manually extended) length provides a substantially better—but still imper...

Jan 17, 2026

What standardized protocols do urology studies use for measuring erect penile length and girth?

Urology research uses a small set of consistent but not universally enforced protocols for erect penile measurement: length is typically measured from the pubo‑penile junction (or suprapubic skin afte...