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LGC announces newly accredited forensic DNA services

24 Sep 2015
We are pleased to confirm some exciting developments in our range of forensic DNA services.
 
LGC has been successful in gaining IS0/IEC17025:2005 accreditation through UKAS for the use of LiRA mixture interpretation software and PowerPlex Y23 Y-STR chemistry.
 
LiRA is a new mixture interpretation software tool which uses a discrete interpretation model to quantitatively evaluate DNA evidence. It has been developed in-house and can perform calculations on profiles for up to 3 people. The software has already showed its capabilities by allowing a statistical weight of evidence to be calculated where it was previously not possible.
 
Our new and improved Y-chromosome short tandem repeat (Y-STR) technology,Powerplex Y23 kit, offers increased discrimination and sensitivity, as well as an improved ability to deal with inhibited samples. Y-STR analysis targets male DNA and has been in use in the UK for a number of years. Y-STR profiles are highly variable between unrelated men, but because the Y chromosome is passed on intact from father to son, Y-STRs cannot usually distinguish between men from the same paternal lineage (such as father and son). The main application for Y23 will be in investigating sexual offences where low levels of male DNA (from an attacker) may be present in high levels of background female DNA from the victim. In these cases, Y23 can produce valuable evidence where conventional DNA-17 STR profiling would have failed. 
 
If you would like to know more, please look out for LGC’s forensics teams, who will be attending a series of key industry events: come and visit us at the Coroners' Conference,  E-Crime, and the F3 Analysts Workshop.
 
In addition, if you have any queries, please feel free to contact our Forensics team.
 
The LGC UKAS schedule of accreditation for the accredited methods can be viewed through the UKAS website.