Body Fluids

There are many ways to detect body fluids. Although this is so, four basic questions must be asked. This helps determine some factors in a crime case.
The four questions are:
1. Are the stains blood, semen, saliva, or some other substance?
2. Are the stains from a human or other animal?
3. Who or what is the source of the stain?
4. How, why, and when did they get deposited on items associated with the scene?

Now, here are some ways to detect body fluids. By using a fluorescent, mercury vapor, or sodium light blood spots can be found. This used when white light is not available. White light is the best source of light for investigating. The reason the other sources are used is because under those sources, any read object will show a bluish light. It won’t look red. This is also used to detect stains that are not visible. Sometimes a crime scene can be bloodless. This would probably be because an exit wound is blocked. Until the body is moved there will be no blood found. That’s some information for my readers.