DNA transfer in an office space visited by an intruder after resumed use by the owner

Monique Zacher, Roland A. H. van Oorschot, Oliva Handt, Mariya Goray

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Knowledge of DNA-TPPR in various settings and circumstances can aid sample targeting and collection, interpretation of DNA profiles, and activity level assessments. The present study looks at a number of items/surfaces in a single-use office space that was sequentially used for one hour by the owner, a temporary occupant (intruder), and the owner (3 h total). Video recording allowed evaluation of contacts made by participants to assist targeted sampling. In a majority of samples, the owner of the office space was the major contributor regardless of the last person to have contacted an item/surface. The DNA of the intruder persisted after contact on 7 of 19 items/surfaces that the owner of the office space re-used. Interestingly, the participants picked up DNA from each other on hands and clothing via indirect transfer.
Original languageEnglish
Pages (from-to)311-313
Number of pages3
JournalForensic Science International: Genetics Supplement Series
Early online date26 Oct 2022
Publication statusPublished - Dec 2022


  • DNA
  • DNA transfer
  • DNA persistence
  • DNA prevalence


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