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. 2012 Jan 27;7(1):e30779. doi: 10.1371/journal.pone.0030779

Figure 5. Calibration curves for the relationship between the frequency shift of immunoreaction and the dilution ratio of SjAb.

Figure 5

The dynamic dilution range of SjAb is ∼1∶1500 to 1∶60 with the detection limit of ∼1∶1800 dilution, estimated according to the 3σ (standard deviation) rule. A sample with 1∶100 dilution of SjAb was determined repeatedly for five times. The average response frequency shift value was 340±19 Hz, and the relative standard deviation (RSD) among five runs was 9.1%.