PERCENTAGE OF BLOOD DONORS WITH DOUBTFUL NEGATIVE RESULTS IN AG/AB SCREENING FOR HCV, HBV AND HIV IN BLOOD BANK ,RIMS, RANCHI, JHARKHAND

Sushma Kumari, Asha Kiran, Manisha Kujur, Ritesh Kumar

Abstract


Background: The serological screening tests are unable to detect the disease within their own defined window period making the recepients
vulnerable to get infection.
Aim: To reduce the risk of TTI in recepients by repeating the tests with dissimilar results and increasing the grey zone range from 10 to 20 % below
the cut of value.
Methods: Blood samples were screened for HIV-I and II, HBV and HCV by using chemiluminescence techanique.
Results:During January 2016 to December 2016 a total of 27790 blood units were screened which showed 282 HBSAg (1.01%) positive ,222
(0.79%) anti HCV positive and 53(0.19%) anti HIV positive. Cumulative percentage of all the blood units with OD (optical density) 0.90 RLU and
above was 2.0%.
Conclusions: Doubtful negative results in Ag/ab screening for HCV, HBV and HIV should be retested. Any result showing OD 90 RLU and above
should be discarded.


Keywords


Transfusion Transmitted Infections, Doubtful Negative Results

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