1. A spectroscopic method of analyzing tissue, comprising: illuminating a region of tissue with a first light source to induce an inelastically scattering emission from the tissue in a range of wavelengths; illuminating the region of tissue with a second white light source to induce diffuse reflectance of light from the tissue; collecting inelastically scattering radiation emitted from the tissue at the wavelengths in the range of wavelengths; collecting diffuse reflectance radiation emitted from the tissue at the wavelengths within the range of wavelengths of the inelastically scattering emission; coupling the collected inelastically scattering and diffuse reflectance emissions to a spectral analyzer; and determining intrinsic inelastic scattering of the tissue at each wavelength within the range of wavelengths by adjusting the collected inelastically scattering radiation at each wavelength with the collected diffuse reflectance at the same wavelength.