In the forensic community, serology and DNA analyses are closely related. In fact, in many laboratories they are included within the same personnel section. In the forensic crime laboratory, “serology analysis” refers to the screening of evidence for bodily fluids, whereas “DNA analysis” refers to the efforts to individualize bodily fluids to a specific person. In most cases, bodily fluid identification is performed on evidentiary items before DNA analysis is attempted. Depending on the qualifications of laboratory personnel, analysts can be trained to perform either serology or DNA analysis or can be trained in both disciplines. Although serology procedures have been employed for most of the 20th century and the techniques have essentially remained unchanged, DNA has emerged in the forensic realm within the last two decades and its applications and technology are continuously developing.