As a Noun: 1. A SPECIMEN is a small quantity of someone's urine, blood, or other body fluid which is examined in a medical laboratory, in order to find out if they are ill or if they have been drinking alcohol or taking drugs. Note: 1. There appears to be no commonly used Auslan sign for SPECIMEN. If you know a sign for SPECIMEN used by you or other Auslan users (deaf people or interpreters) please go to "report missing sign" and supply details. Thank you.