Red Cell Disorders |
1 Dept. of Clinical Biochemistry, Aarhus University Hospital, Aarhus Sygehus, Denmark;
2 Dept. of Clinical Biochemistry, Aarhus University Hospital, Skejby, Denmark;
3 Dept. of Obstetrics, Gentofte Hospital, University of Copenhagen, Denmark;
4 Dept. of Medicine B, Rigshospitalet, University of Copenhagen, Denmark
Correspondence: Anne L. Mørkbak, Dept. of Clinical Biochemistry, Aarhus Sygehus, Nørrebrogade 44, K 8000 Aarhus, Denmark. Phone: international +45.89493065. Fax: international +45.89493060. E-mail: almor{at}as.aaa.dk
We confirm a decrease in cobalamins during pregnancy, and report that the active part of cobalamins (holotranscobalamin, holoTC) remains unchanged. The decrease in cobalamins is explained by a decreased holohaptocorrin (holoHC), suggesting that holoTC rather than cobalamins should be used as a marker of vitamin B12 deficiency during pregnancy.