In the study published in the journal Biomedical Optics Express researchers used a specialised laser to measure blood sugar. This advanced method could allow diabetics to check their condition without pricking themselves to draw blood. The researchers from Princeton University measured blood sugar levels in diabetics using a specialised laser that passes rays through the skin cells without causing any harm. It is partially absorbed by sugar molecules present in the blood which helps in detecting the level of sugar in the blood. For the experiment the researchers used a device having quantum cascade laser to measure blood sugar level of three
