RLU stands for Relative Light Units and is the unit of measure used in the NEMIS luminometer. RLU values are proportional to the amount of AquaSpark™ light emission induced by a specific enzyme.
For each NEMIS test, a certain RLU threshold for presumptive positive tests has been validated in extensive experimental studies at NEMIS. Below the threshold, the test result is considered negative. In the case of the N-Light™ Listeria spp., a sample is considered presumptive positive when the signal is above 4’000 RLU.
