[Determination of the pregnancy associated alpha-2-glycoprotein (PAG) in pregnant women with reference to the number of previous pregnancies].

By estimation of PAG level from 33 primipara, 20 second-para and 11 third-para it was investigated if there are a correlation between PAG concentration and the number of gravidity or the weight of newborn respectively. The PAG concentration was estimated by so called Laurell electrophoresis and expressed in mm precipitate column. The middle concentration of PAG disclose in primipara 24,7, in second-para 23,0 and in third-para 21,1 mm. The average weight of newborn was to found a contrary tendency. The difference of PAG level between primi- and third-para was statistically significant.