The World Health Organization (WHO) has tried to standardize the different methods for measuring prostate specific antigen (PSA). Results previously reported using the Hybritech method can be converted to a value that would be seen using the WHO standardized test.
Hybritech PSA in ng/mL
WHO PSA in ng/mL
0
0
1
0.8
2
1.6
3
2.3
4
3.1
5
3.9
6
4.7
7
5.5
8
6.2
9
7.0
10
7.8
value in WHO assay in ng/mL =
= (0.7782 * (value in Hybritech assay in ng/mL)) + 0.00909
value in Hybritech assay in ng/mL =
= (1.285 * (WHO value)) - 0.01159
To read more or access our algorithms and calculators, please log in or register.
