[The comparison of the WHO standard rabies immunoglobulin and the national standard human rabies immunoglobulin used in the rapid fluorescent focus inhibition test (RFFIT)].
OBJECTIVE
Compare the difference of the results referred to the WHO standard rabies immunoglobulin and the national standard human rabies immunoglobulin used in the rapid fluorescent focus inhibition test (RFFIT).


METHODS
Setting the WHO standard immunoglobulin and the national standard immunoglobulin in the same system and testing 12 human serum at the same time. Compare the fluorescence percentage of the two different standard immunoglobulin; compare the 12 serum results calculated from the two different standard immunoglobulin used the calculation formula of neutralization antibody titer.


RESULTS
The Results display that the 50% percent of the two standard immunoglobulin are all between the fifth and the sixth well, but the percentage of the national standard immunoglobulin is lower than the WHO one. The same testserum result calculated from the WHO standard immunoglobulin is little higher than the national one.


CONCLUSIONS
There is difference in the WHO standard immunoglobulin and the national one, but there is no influence in the results.
Institute for Viral Disease Control and Prevention China CDC, Beijing 100052, China.
Peng-Cheng
PC
Yu
Xin-Xin
XX
Shen
Xin-Jun
XJ
Lv
Hu
H
Shan
Qing
Q
Tang
D005455:Fluorescent Antibody Technique / Q000379:methods* / Q000592:standards; D006801:Humans; D007136:Immunoglobulins / Q000276:immunology*; D009500:Neutralization Tests / Q000379:methods* / Q000592:standards; D011818:Rabies / Q000175:diagnosis* / Q000276:immunology; D011820:Rabies virus / Q000276:immunology; D012015:Reference Standards; D014944:World Health Organization
D007136:Immunoglobulins