MedlinePlus Medical Encyclopedia: Erection self-test

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Erection self-test

The nocturnal penile tumescence (NPT) stamp test is a test that confirms the inability to achieve and maintain an erection.

Update Date: 6/5/2007

Updated by: Marc Greenstein, DO, Urologist, North Jersey Center for Urologic Care, Denville, NJ. Review provided by VeriMed Healthcare Network.

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