Which storage condition is best for buccal swabs in forensic analysis?

The best storage condition for buccal swabs in forensic analysis is temperature-controlled. This condition ensures that the swabs are kept at a stable temperature, protecting the integrity of the collected DNA and preventing degradation over time. Maintaining a consistent environment helps to preserve the biological material, as extreme temperatures (either too cold or too warm) can lead to the breakdown of DNA and compromise the results of any forensic testing done later.

While refrigerating and freezing buccal swabs can be effective in certain situations, they may not be the optimal choice for long-term storage or transportation, as fluctuations in temperature can still occur. Dried samples can preserve the DNA, but they also need to maintain a controlled environment to avoid contamination or degradation from environmental factors. Therefore, temperature-controlled storage offers the most reliable conditions for safeguarding the integrity of buccal swabs, making it the best choice for forensic analysis.