Donor 1 2 4 5 6
Whole blood system Results not elevated Results not elevated Results not elevated Results not elevated Results not elevated
Low haemoglobin system 25% 75% 25% 50% 50%

Description of the lowest saliva concentration required (0 to 100%) to get elevated results (> 0 g/dL) from the analyses. Saliva 0 to 100% did not affect the whole blood measurement device. Saliva 25 to 75% or more affected the low haemoglobin device.