On the other hand, it is not possible to comprehend the criteria adopted in the assessment of the positive quantification result for sample B and the negative result for sample C, given that the same result, “too low”, was obtained for both samples: that is, a value which must be considered not only below the sensitivity threshold of the Fluorimeter indicated by the manual (DNA concentrations equal to 0.2 ng/μl), but below 0.08 ng/μl, a value which the Fluorimeter detected for sample A.
Nor is it comprehensible, considering the negative results on sample B, what Dr. Stefanoni reported during the GUP questioning (page 178) where she stated that the DNA in sample B, quantified with Real Time PCR (it is recalled that such quantification as confirmed during the hearing was never carried out or, at least, no documentation was provided to support this claim), was “in the order of some hundreds of picograms”, a value which does not appear in any of the documents provided to us (SAL, Fluorimeter report, Real Time report, RTIGF).