1. A method for measuring the concentration of an analyte in a scattering medium, the method comprising the steps of: illuminating a sample containing said analyte with broad spectrum radiation; detecting an amount of transmitted, transflected, or reflected radiation from the sample with a detector; associating a vector in a vector space with the amount of transmitted, transflected, or reflected radiation; determining a correction vector from a standard in a non-scattering medium; and utilizing said correction vector and said vector associated with the amount of transmitted, transflected, or reflected radiation to identify and to obtain the concentration of the analyte in the scattering medium.