What evidence from the suspect in a sexual assault is studied in CSI?

What evidence from the suspect in a sexual assault is studied in CSI?

Often the suspect is not apprehended until many hours, perhaps even a few days, if that, after the assault has taken place. If the suspect is apprehended, of course a DNA sample must be obtained through a bugle swab. Interestingly enough if the suspect is nabbed within 24 hours of the assault it is recommended that penile swabbings be taken from the suspect because the vaginal cells can remain on the male penis for up to 24 hours. Hair samples would be taken: pubic hair samples and head hair samples for control purposes. And of course all of the clothing the suspect was thought to have worn on the night or the day of the assault is collected and sent off to the crime lab as well.