DNA on feminine sanitary products

Area of Science:

• Forensic Science
• Genetics
• Women's Health

Background:

• Feminine hygiene products are widely used by women during their reproductive years.
• These products are often not sterile, raising concerns about potential DNA contamination.
• DNA on products could be transferred to the wearer and detected in medical samples.

Purpose of the Study:

• To investigate the presence of detectable DNA on unused feminine sanitary products.
• To determine if these products are a potential source of DNA contamination in forensic or medical contexts.

Main Methods:

• 52 unused feminine hygiene products (tampons, pads, liners, wipes) were analyzed.
• Tape lifts were used to collect surface material for DNA analysis.
• Total DNA quantification, male-specific DNA quantification, and Y-STR amplification were performed.

Main Results:

• Nineteen of the 52 products yielded quantifiable DNA above zero.
• Only four products (one tampon, three liners) showed Y-STRs (male DNA markers).
• One pad showed a single autosomal allele and an amelogenin X allele; all peak heights were low.

Conclusions:

• Feminine sanitary products are generally not a significant source of detectable DNA.
• The risk of DNA contamination from these products in intimate samples is low.
• Further investigation is needed for products potentially contaminated post-purchase.