[Haptoglobin in domestic mammals.  V. Plasma haptoglobin level in cattle under pathological conditions]. 
The haptoglobine concentration in the blood plasma of cattle tends to rise to more than 10 mg/100 ml in the presence of acute inflammation anywhere in the organism.  They were 40 mg/100 ml and above in the presence of traumatic reticuloperitonitis.  The absence of haptoglobin multiplication in the plasma is a high-probability indicator to the absence of that inflammatory process.  chronic inflammation will only in exceptional cases entail plasma-haptoglobin multiplication.  Concentrations will not be pathologically increased in cattle with positive reaction to haematological testing for leucosis.