75 but variance in a particular result depends on the quality control and quality procedure in the laboratory.” 140. This court, in one of its recent decisions - Pattu Rajan v. The State of Tamil Nadu54, considered the value and weight to be attached to a DNA report: “33. Like all other opinion evidence, the probative value accorded to DNA evidence also varies from case to case, depending on facts and circumstances and the weight accorded to other evidence on record, whether contrary or corroborative. This is all the more important to remember, given that even though the accuracy of DNA evidence may be increasing with the advancement of science and technology with every passing day, thereby making it more and more reliable, we have not yet reached a juncture where it may be said to be infallible. Thus, it cannot be said that the absence of DNA evidence would lead to an adverse inference against a party, especially in the presence of other cogent and reliable evidence on record in favour of such party.” 141. This court, therefore, has relied on DNA reports, in the past, where the guilt of an accused was sought to be established. Notably, the reliance, was to corroborate. This court highlighted the need to ensure quality in the testing and eliminate the possibility of contamination of evidence; it also held that being an opinion, the probative value of such evidence has to vary from case to case. 142. In the present case, what is apparent, is that PW-35 has virtually echoed the DNA analysis in his chief examination, and not chosen to elaborate on the random occurrence ratio, i.e., the probability of the accused’s samples matching with those allegedly found at the crime scene. This court has already discussed whether the recoveries of 23.06.2011 pursuant to disclosures made that day can be accepted and held that they are suspect and need to be discarded. This leaves the report, to the extent it says that samples lifted from recoveries made at the crime scene matched what was seized on 22.06.2011 (knives, and other articles), to be inconclusive. 143. It is noteworthy that seizure Memo Ex-27, in terms of which Article A-9 (ID 3063) is said to have been seized, does not record that as a matter of fact, a bed-sheet was seized. If one keeps in mind that source H2 (ID 3078) in relation 54 (2019) 4 SCC 771