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, below the threshold, the test reults is considered as negative. In the case of the N-Light™ E. coli, a sample is considered presumptive positive when the signal is above 10’000 RLU.
