She continued to explain that she used low number copy DNA to identify profiles of Knox mixed with Meredith's blood in Filomina's bedroom. If there is a problem with the LNC DNA, we will know that through the appeal.
"With respect to the Luminol-positive traces found in Romanelli's room, in Knox's room and in the corridor, she stated that by analysing the SAL cards "we learn, in contradiction to what was presented in the technical report deposited by the Scientific Police, and also to what was said in Court, that not only was the Luminol test performed on these traces, but also the generic diagnosis for the presence of blood, using tetramethylbenzidine...and this test...gave a negative result on all the items of evidence from which it was possible to obtain a genetic profile" (pages 73 and 74). She thus asked whether it was still possible to interpret these traces as being haematic in nature. Analysing the quantification data, she added, "we see that the quantity of DNA obtained from the major part of these traces is compatible with low copy number DNA; therefore DNA is present in very small quantities; so it is also necessary here to ask oneself whether or not the amplification could be repeated, in order to be able to consider the results obtained as scientifically valid‛ (page 74)."
Motivation Report (pg 257)