BBM : I happy to hear that the DNA testing was done in a lab in NZ & not the troublesome QLD DNA lab!!
I just remembered how much you love forensics Drsleuth……. So here it all is…….
“The fingernail DNA matched Mr Singh’s at 26 of 27 points tested, said Forensic scientist, Jayshree Patel, from the Institute of Environmental Science and Research Limited in New Zealand.”
“Ms Patel said she received and tested six samples from the Forensic Science Queensland laboratory, obtained from Ms Cordingley’s left and right fingernails, one from Mr Singh’s sandshoe, and three from logs and sticks from the crime scene.
She said her team ran different tests to those used in Queensland, Y-STR, which can only be performed on male DNA and compares 27 sites, and another called Mini-STR.
“We were asked to do specialist DNA testing (Mini-STR) … it is helpful for samples that might be degraded,” Ms Patel explained.
She said Y-STR testing produce a less unique profile “because that is the portion of DNA down the male line, and it doesn’t have the opportunity to create variation.”
Ms Patel said they tested the samples against Mr Singh’s DNA and Mr Heidenreich’s DNA.
The comparison between Mr Singh’s DNA and the fingernail DNA was repeated twice, with a 27/27 match returned in one test and a 26/27 match in another test.
She said a partial sample taken from a log at the crime scene was also found to be a consistent with Mr Singh’s DNA but not with Mr Heidenreich’s DNA.
Under cross examination by Angus Edwards KC, Ms Patel said Mr Heidenreich and Mr SIgnh shared the same information as one another at 15 of 27 sites on their DNA.“
Taken from the same link as my original post.