How is semen studied in CSI?

How is semen studied in CSI?

There are a number of tests. Perhaps the first test that is most important to use is locating the stain. This is done with a color test known as the acid phosphatase color test. Acid phosphatase is an enzyme that is present in human seminal fluid. It is present in high concentrations, and it is locatable through this color test known as the acid phosphatase color test. If semen is located, the next test is to look for spermatozoa. This is a specific test, and the stain will be examined under a microscope for the presence of human sperm. However, often, spermatozoa are not to be found, for a number of reasons, so the next test that we would use would be the prostate-specific antigen test known as the PSA test. It is the same test that is used for medically testing individuals for the presence of prostate cancer. The PSA test is a very specific test for human seminal fluid, and serves as an identifier in place of human sperm. Finally, we have a DNA test. If we have identified the stain as being seminal in nature, as being sperm or PSA, the presence of DNA will allow us to link that stain to one, and only one, individual.