RESUMEN
This review is engaged in determining the capability of plant pollen as a significant source of evidence for the linkage between suspects and crime location in forensic sciences. Research and review articles were collected from Google Scholar, the Web of Science, and PubMed. Articles were searched using specific keywords such as "Forensic Palynology," "Pollen metabarcoding," "Plant forensics," and "Pollen" AND "criminal investigation." Boolean logic was also utilized to narrow the articles to be included in this review article. Through the literature and exploratory research, it has been observed in the current study that with advancements in technology, forensic palynology has found its application in creating an association between the crime scene and suspected individuals to have a link to it, as pollen DNA is a long-lasting investigative tool that can effectively help forensic investigations. Moreover, the literature shows that the DNA of pollen and spores has helped forensic scientists link suspects to crime scenes, and the introduction of pollen DNA metabarcoding tools has eased the efforts of palynologists to analyze pollen DNA. The introduction of DNA metabarcoding techniques to analyze pollen from plants has helped identify the geological locations of the plants and ultimately identify the culprit.
RESUMEN
BACKGROUND: A sensitive and specific donor screening strategy is essential for the prevention of transfusion-transmitted infections (TTI). The study was conducted to ascertain the comparative efficacy of ICT, CLIA and NAT methods. METHODS: This cross-sectional analytical study was conducted in Regional Blood Center Abbottabad, Pakistan from 1st April to 25 August 2022. 6233 donors were screened for Hep B, C, and HIV by testing simultaneously with ICT, CLIA and NAT. RESULTS: Active Hep B, C and HIV Infection was present in 0.51%, 0.28% and 0.00048% donors respectively. The sensitivity was found to be higher for HBV and HIV with CLIA as compared to ICT but was equal for HCV with both. whereas specificity was the same with both CLIA and ICT for all three viruses. PPV was higher with ICT for HBV and HCV, but for HIV it was found higher by CLIA. NPV was higher for all three viruses by CLIA as compared to ICT. CONCLUSIONS: In case rapid testing devices are used for the initial screening of blood in countries with limited resources, positive cases must be confirmed by CLIA and if possible, then by NAT because of missing cases in the window period and false positive cases.