How long does DNA stay on clothing?

DNA can remain on clothing for varying periods of time, but there is no fixed timeframe that applies in every case.

Biological material may persist on fabric for hours, days, or longer depending on factors such as the type of material, how the clothing is worn, movement, environmental exposure, washing, and handling after use.

In some cases, DNA has been recovered from clothing many years after the alleged offence, particularly where garments have been stored and not heavily worn or repeatedly washed. Persistence therefore varies significantly between garments and circumstances.

Some DNA may be lost quickly through friction, wear, and laundering. In other cases, small amounts can remain and still be detectable through laboratory testing. The absence or presence of DNA over time is not predictable.

Importantly, the presence of DNA on clothing does not indicate when it was deposited. Biological material may remain from earlier contact, transfer from other items, or be introduced during handling, washing, or storage.

Research has shown that DNA can also move on and between fabrics over time, meaning its location and persistence do not necessarily reflect the original point of contact.