[Quantitative plasma protein determination as an aid to diagnosis (author's transl)]

The lack of internationally comparable reference standards for plasma proteins causes problems. For this reason, it is only possible to evaluate the "accuracy" of measurements by comparison of methods. Differences in results which may sometimes be based on technical procedure, physical chemistry or biology are gone into with reference to diagnostically important examples such as albumin, transferrin, ceruloplasmin, fibrinogen and complement 3. It is shown which plasma protein constellations may frequently be expected in certain reactions and what protein patterns have principal importance in clinical practice, e.g. in acute and chronic inflammatory diseases, protein depletion diseases and in liver diseases.