Ann Clin Microbiol 2022;25:85-95. Antibody detection in healthcare workers after vaccination with two doses of the BNT162b2 or ChAdOx1 vaccine
Table 3. AstraZeneca ChAdOx1 seropositive rate and quantitative level of immunoglobin according to Elecsys COV2S and Centaur COV2T
Quantitation U/mLAstraZeneca ChAdOx1 – post 3 weeks AstraZeneca ChAdOx1 – post 16 weeks
Male (n = 38)Female (n = 78)Total (n = 116) Male (n = 21)Female (n = 43)Total (n = 64)*
Elecsys COV2S       
Negative2 (5.3)3 (3.8)5 (4.3) 
0.8 – 19.9920 (52.6)44 (56.4)64 (55.2) 
20 – 49.994 (10.5)15 (19.2)19 (16.4) 
50 – 99.998 (21.1)8 (10.3)16 (13.8) 1 (4.8)1 (1.6)
100 – 174.992 (5.3)5 (6.4)7 (6.0) 
175 – 249.991 (2.6)1 (1.3)2 (1.7) 1 (4.8)4 (9.3)5 (7.8)
above 2501 (2.6)2 (2.6)3 (2.6) 19 (90.5)39 (90.7)58 (90.6)
Centaur COV2T       
Negative7 (18.4)17 (21.8)24 (20.7) 
1 – 4.9917 (44.7)41 (52.6)58 (50.0) 
5 – 103 (7.9)8 (10.3)11 (9.5) 1 (4.8)1 (1.6)
> 1011 (28.9)12 (15.4)23 (19.8) 20 (95.2)43 (100.0)63 (98.4)

Values are presented as n (%). *52 subjects were not tested at post 16 weeks. Abbreviation: Centaur COV2T, Centaur XPT SARS-CoV-2; Elecsys COV2S, Elecsys Anti-SARSCoV-2S