The significance of the relationship between serum levels of cobalamin and MCHC during pregnancy.

Cobalamin concentration and mean corpuscular haemoglobin concentration (MCHC) were found to have highly significant inverse correlation with the weeks of pregnancy (respectively -.278 P < .0001 and .

Iron balance in pregnancy in relation to anemia.

Blood levels of iron, transferrin and ferritin varied in the course of pregnancy (6th to 42nd week) in 136 women. Analysis of variance showed that the factor "weeks of pregnancy" (< or = 27 or > 27 weeks) was correlated differently with the variables "ferritin" and "iron" according to the presence or absence of anemia (Hb < or = or > or = 11 g/dl). In anemic women the correlation was significant (F-ratio = 5.