Does DNA prove guilt?

No.

DNA evidence does not prove that a person committed an offence.

DNA testing can identify biological material and, in some cases, link it to a particular individual. What it cannot determine is how that material was deposited, when it was left, or what activity led to its presence.

DNA may result from direct contact, indirect transfer, prior interaction, or persistence over time. Its presence alone does not establish what occurred or whether any alleged conduct took place.

Laboratory findings address whose DNA may be present. They do not answer the legal question of guilt, which depends on the full circumstances of a case, including timing, context, witness accounts, and alternative explanations.