Yes, vomit contains DNA. It is considered biological evidence and can be subjected to DNA testing, although it may not be routinely accepted by laboratories. This is because vomit contains cells shed from the lining of the mouth, stomach, and intestines, all of which contain DNA. While vomit may not be the most reliable source of DNA due to the potential for contamination, it can still be useful in certain investigations.
Here are some key points to consider:
- Vomit can be tested for DNA, but may not be routinely accepted by laboratories for testing.
- DNA found in vomit can be used to identify individuals.
- Vomit may contain a mix of DNA from different sources, including the person who vomited and any food or drink they consumed.
- Contamination can be a concern, as vomit may contain bacteria or other microorganisms.
Examples of how vomit has been used in investigations:
- Crime scenes: Vomit can be collected as evidence and tested to identify the perpetrator.
- Medical investigations: Vomit can be tested to determine the cause of illness or identify pathogens.
- Paternity testing: Vomit can be used as a source of DNA for paternity testing.
It's important to note that:
- The quality and quantity of DNA in vomit can vary depending on the individual and the circumstances.
- Not all laboratories are equipped to handle vomit samples for DNA testing.
- There are ethical considerations associated with collecting and testing vomit samples.
