FIELD: chemistry.
SUBSTANCE: claimed is method of determining analite concentration in sample, which contains: application of input signal to sample, with input signal containing, at least, 3 working cycles within 10 seconds, with each working cycle including excitation impulse and relaxation; measurement of output signal, sensitive to measured substance, within 300 milliseconds from the beginning of excitation impulse of, at least, one working cycle; and determination of analite concentration in sample in response to measured output signal. Also described are portable measuring device and biosensor system for determination of analite concentration in sample, as well as method of reducing systematic error in determination of analite concentration in sample.
EFFECT: increased accuracy and reliability of analysis.
64 cl, 2 tbl, 6 dwg
