Question

Using an alternate light source, you can identify stains that may contain samples of

A. serum.
B. semen.
C. saliva.
D. urine.
E. All of the above

Answer 1

Using an alternate light source, stains containing serum, semen, saliva, or urine can be identified by their fluorescence.

Step-by-step explanation:

Using an alternate light source, you can identify stains that may contain samples of serum, semen, saliva, or urine. An alternate light source, such as UV light, can cause these bodily fluids to fluoresce, making them visible under specific wavelengths of light. For example, semen stains may fluoresce under UV light due to the presence of an enzyme called prostate-specific antigen (PSA). Similarly, saliva stains may also fluoresce due to the presence of certain enzymes or proteins.