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JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE ›› 2016, Vol. 18 ›› Issue (3): 276-280.DOI: 10.3969/j.issn.1671-2587.2016.03.024

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A Retrospective Analysis on Nucleic Acid Screening of Blood in Shanghai Region after Centralized Detections

LU Tao-hong, ZHOU Guo-ping, ZHANG Xi   

  1. Shanghai Blood Center, Shanghai, 200051
  • Received:2016-03-14 Online:2016-06-20 Published:2016-09-21

Abstract: Objcective To investigate the positive impact of nuclear acid testing on reducing the risk of regional infectious transfusion through systematic retrospective analysis on nucleic acid screening data of blood in Shanghai after centralized detections. Method Nucleic acid testing(NAT) results of 1,276,206 blood samples with no reactive to the Enzyme-Linked ImmunoSorbent Assay (ELISA) (HBsAg、Anti-HCV、HIV Ag-Ab) from various blood services in Shanghai region after centralized screening are analyzed. Results The ratio of “ negative in ELISA (HBsAg,Anti-HCV, and HIV Ag-Ab) but positive in nucleic acid testing (NAT)” ((ELISA NR/NAT R ) in Shanghai was found to be 0.63‰. The overall ELISA NR/NAT R ratios from the year 2012 to 2015 gradually declined . The highest ELISA NR/NAT R ratio was in 2012 (0.76‰), apparently higher than those of the next 3 years(P<0.01), and the second highest ELISA NR/NAT R ratio appeared in 2013 and 2014 (0.62‰). The lowest ELISA NR/NAT R ratio (0.50‰) was observed in 2015. There was no significant differenceduring the last 3 years (P>0.05). Among the total 800 cases of reactive “NAT” (0.63‰), 464 (0.36‰) cases were positive for HBV DNA, with the highest ratio of HBV DNA positive cases in 2012 (0.49‰), which was notably higher than those of the next 3 years (P<0.01). The overall ratios of HBV DNA positive cases from 2013 to 2015 were ranged from 0.31‰ to 0.34‰, with no significant difference (P>0.05). For other cases of reactive “NAT”, 7 (0.005‰) were positive for HCV RNA, 14 (0.01‰) were positive for HIV RNA, and 315 (0.25‰) were negative for the three viruses. Conclosion Despite the exist of certain false reactivity in NAT, the full implementation of nuclear acid testing for blood in Shanghai region after centralized detections has effectively reduced the risk in blood transfusion and ensure the blood safety citywide.

Key words: Centralized, screening, Nucleic, acid, testing, Blood, safety

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