Erection self-testBackErection self-testThe nocturnal penile tumescence (NPT) stamp test is a test that confirms the inability to achieve and maintain an erection. Content is best viewed in IE9 or above, Firefox and Google Chrome browser.
Erection self-testBackErection self-testThe nocturnal penile tumescence (NPT) stamp test is a test that confirms the inability to achieve and maintain an erection.