How to Store Hair Strands for DNA Preservation: Tips and Best Practices

When storing hair strands with the intention of preserving any DNA found in the roots, it is crucial to follow specific guidelines that ensure the integrity and viability of the genetic material. Proper collection and storage techniques can significantly enhance the possibility of retrieving accurate DNA results.

Collection

The process of collecting hair strands for DNA preservation starts with utilizing clean and sterilized tools. Use either sterilized scissors or tweezers to gather the hair strands, with particular emphasis on including the roots. The follicles at the hair roots are rich in viable DNA, making them an invaluable source for DNA analysis.

Storage

Properly storing hair after collection is vital for long-term preservation. Ensure that the hair is thoroughly dried to prevent mold or degradation. Ideal storage containers should be clean, dry, and breathable, such as paper envelopes or glass vials. Avoid using plastic bags, as they can trap moisture and promote mold growth.

Clearly label the storage container with relevant information such as the date, name, and context of collection. This will help in maintaining an organized and informative record.

Environmental Conditions

To ensure the longevity of the DNA, store the hair sample in a cool, dark place away from direct sunlight and humidity. A temperature-controlled environment is ideal to minimize environmental factors that can degrade DNA. Limiting contact with the hair to avoid contamination is also essential.

Long-term Preservation

When stored correctly, hair strands can last for many years. The quality of the DNA may degrade over time, especially if not stored appropriately. DNA in the hair roots can remain viable for decades, but it is important to note that the higher quality hair samples collected soon after death are the most reliable.

Additional Tips

For legal or forensic purposes, it might be beneficial to consult with a forensic expert for best practices and techniques. Professional services can provide the expertise needed to ensure the highest quality of DNA preservation.

To visually enhance and showcase the hair strands, consider using a clear standing frame that sits upright without needing a surface. Place the lock of hair on archival tissue paper, then carefully place the tissue paper and hair together in an archival box. This method not only preserves the hair but also enhances its display value. Include any accompanying notes or information in the box for added context.