METHOD AND SYSTEM FOR THE PRODUCTION OF A TEST RESULT INDICATIVE OF THE PRESENCE OF A SUBSTANCE IN A SAMPLE BASED ON A SPECTROMETRIC MEASUREMENT

摘要

The invention relates to a method and a device for producing a test result indicative of the presence or concentration of a substance in a sample. The aim of the invention is to create solutions which allow the concentration of a substance to be determined reliably by a spectrometer while the respective measurement can be taken within a relatively short period of time without including a reference measurement in a direct temporal proximity of the measurement and without going through a preliminary operating phase to stabilize the device. According to a first embodiment of the invention, said aim is achieved by a method for producing a test result indicative of the presence of a substance in a sample based on a spectrometric measurement. In said method, light is emitted to said sample from a source during an illumination phase, light marked by the interaction with said sample is detected in terms of the spectral intensity distribution, and the concentration of a substance or a variable related to the concentration is determined during a computer-aided mathematical test signal processing process taking into account the spectral intensity distribution of the detected light, an LED being used as a light source. A compensation function which takes into account dependencies of the spectral intensity distribution of the light emitted by the light source on the temperature of the LED is processed during the computer-aided mathematical test signal processing process, thus advantageously making it possible to take a spectrometric measurement without going through a time-consuming heating phase of the measurement system. The measurement can be taken immediately using the device at ambient temperature.