Highlights
- •Method for the detection of a comprehensive body fluid panel using RT-LAMP with an optical detection method.
- •LAMP reaction captured as 96-well format in 30 min with a smart phone, avoiding use of expensive, complicated instrument.
- •The speed, sensitivity, and specificity this method provides is a significant improvement over current bfID methods.
Abstract
Messenger RNA profiling for body fluid identification (bfID) is a useful approach
to collect contextual information associated with a crime. Current methods require
costly fluorescent probes, lengthy amplification protocols and/or time-consuming sample
preparation. To simplify this process, we developed a bfID method that has the potential
to be rapid in analysis time, inexpensive and fluorescence-free, combining a universal
operating procedure with a high-throughout (microwell plate) platform for simultaneous
detection of mRNA markers from whole blood, semen, saliva, and vaginal fluid. Full
bfID sample preparation and analysis of 23 samples was completed in under 3 h using
smart phone optical detection and analysis and show efficacy of the method in a validated
blind study. The results provide an efficient, sensitive and specific approach to
supplement the current biochemical tests in a forensic laboratory.
Graphical abstract

Graphical Abstract
Keywords
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Article info
Publication history
Published online: November 23, 2019
Accepted:
October 25,
2019
Received in revised form:
October 4,
2019
Received:
July 24,
2019
Identification
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© 2019 Elsevier B.V. All rights reserved.