FIELD: medicine.
SUBSTANCE: there is involved revealing differences between measurement of the analysed substance level in blood samples and measurement of the analysed substance level in reference solutions used for testing of optical devices used to perform these measurements. The reference solution contains: a marking substance revealed by the optical device to distinguish measurements, e.g., of glucose level received for the reference solutions from measurements of glucose level received for biological fluid sample, e.g., blood.
EFFECT: use of the invention allows revealing differences between measurements of the analysed substance level in blood and reference solutions.
2 ex, 2 dwg
