Aspects of the present disclosure relate to techniques for calibrating an integrated device. According to some embodiments, there is provided a method for calibrating an integrated device, the method comprising: exciting, with light from at least one excitation source, a reference dye molecule; obtaining a signal emitted by the reference dye molecule, the signal containing information representative of at least one characteristic of the reference dye molecule; and adjusting one or more subsequent measurements obtained from a sample based on the information obtained from the signal emitted by the reference dye molecule.