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Medical Term:

saturation index


an indication of the relative concentration of hemoglobin in the red blood cells, calculated as: grams of hemoglobin per 100 mL (expressed as percentage of normal) ÷ hematocrit value (expressed as percentage of normal) = saturation index The normal index for adults and infants is 0.97 to 1.02; in primary and secondary anemia, the index is usually considerably less than 0.97.

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