Total Protein/Protein Nitrogen Ratio of Human Serum: A Factor Consistent with Total Solids

Abstract
A new method of gravimetric analysis for total protein of human serum that permits determination of the total protein/protein nitrogen ratio has been devised. Our results affirm the validity of the ratio, 6.54, which has been recommended in lieu of the conventional factor, 6.25. The factor 6.54 is consistent with the constitutive requirement that protein solids and nonprotein solids equal total solids of serum as determined by independent methods.