TABLE 3.

Fast Phage male-specific presence-absence testing in 5 laboratories

Lab no.Spike level (PFU/100 ml)No. of positive samples for water type and assay:
Reagent waterGroundwater
FluorescenceSTEP-1STEP-2FluorescenceSTEP-1STEP-2
1-11.1788488
1-21.3999889
2-10.9268157
2-21.43467910
2-31.2555999
3-11.3101010101010
4-11.191010101010
4-21.3101010101010
51.37510968