Remote photoplethysmographic monitoring system for extracting physiological information indicative of at least one health symptom from remotely detected electromagnetic radiation in the visible wavelength band, re-emitted by a subject of interest and detected by a sensing device arranged at a considerable distance of the subject, the system comprising: - an interface for receiving a data stream comprising remotely detected video data representing an observed region comprising at least one subject of interest , wherein the video data comprises wavelength-dependent image information, wherein the wavelength-dependent image information is composed of three color channels representative of respective wavelength portions, the three color channels comprising a red channel , a green channel and a blue channel ; - an image processor for detecting relative channel signal strength information for at least two of the three color channels , wherein the relative channel signal strength information for a color channel relates to the signal strength of an AC signal portion with respect to the DC signal portion of the same color channel; and - a data comparison unit for comparing detected relative channel signal strengths with respective reference values obtained from reference data generated by monitoring healthy subjects, wherein the data comparison unit is further configured for determining a ratio of the detected relative channel signal strengths of at least two of the three color channels and for comparing the ratio of the relative channel signal strengths with a reference ratio; and - a symptom analyzer for deriving blood composition-indicative information from the comparison of actual relative channel signal strengths with the reference values, characterized in that the symptom analyzer is configured for detecting, as an indicator for jaundice, a level of serum bilirubin in the subject's circulating blood, under consideration of detected signal strength fluctuations influenced by the characteristic absorption spectrum of bilirubin that is present in the detected relative channel signal strength information. - an interface for receiving a data stream comprising remotely detected video data representing an observed region comprising at least one subject of interest , wherein the video data comprises wavelength-dependent image information, wherein the wavelength-dependent image information is composed of three color channels representative of respective wavelength portions, the three color channels comprising a red channel , a green channel and a blue channel ; - an image processor for detecting relative channel signal strength information for at least two of the three color channels , wherein the relative channel signal strength information for a color channel relates to the signal strength of an AC signal portion with respect to the DC signal portion of the same color channel; and - a data comparison unit for comparing detected relative channel signal strengths with respective reference values obtained from reference data generated by monitoring healthy subjects, wherein the data comparison unit is further configured for determining a ratio of the detected relative channel signal strengths of at least two of the three color channels and for comparing the ratio of the relative channel signal strengths with a reference ratio; and - a symptom analyzer for deriving blood composition-indicative information from the comparison of actual relative channel signal strengths with the reference values, <EOS>