Development of Non-invasive Method for Quantifying Vitamin D Levels in the Body Using Spectroscopy

Lack in vitamin D reduces the absorption of calcium in the body; accelerates bone loss tnd may increase the risk of fractures due to osteoporosis. An algorithm that will allow immadiate and non -invasiv quanification of vitamin D levels will shorten the time of diagnosis; reduce lab costs and prevent hazards or discomfort to patient associated with a blood test. The goal of the study is therfore to develop a non invasive method for quanitifying vitamin D levels in the body using specroscopy. 40 subgects will be recruited: 20 hospitalized patients in the endocrinology departmet, diagnosed with vitamin D deficiency. and 20 healthy subjects. Spectroscopy will be used with wisible lighy on the subject's skin and middle infrared (MIR) on the blood sample to find correlation with the chemical lab test results.