System 10 and method for measuring hemoglobin and Lubin parameters in whole blood samples using absorbance.The system 10 includes an optical sample module 20, a spectrometer module 100, an optical fiber assembly 90 optically connecting the optical sample module 20 to the spectrometer module 100, and a processor module 150.The optical sample module 20 has a light emitting module having a LED light source, a cuvette assembly, and a calibration light module.The processor module 150 receives and processes electrical signals from the spectrometer module 100 and converts the electrical signals into an output signal that can be used to display and report hemoglobin parameter values and / or total Lubin parameter values for all blood samples.Diagram
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