A condom--the critical link in a rape.

An intact condom, reputedly used during a rape, was submitted for forensic examination. Conventional biochemistry results indicated that blood found on one side of the condom may have originated from the victim. Semen from the other side of the condom was not characterizable by conventional biochemical methods. Pubic hairs recovered from the condom matched those of the victim and not those of the suspect. Testing the blood and semen from the condom by DNA analysis gave the profile of the victim from the blood and the profile of the suspect from the semen.