The plasma levels of heparin cofactor II were determined in pregnant w
omen who were either normotensive, or had essential hypertension, gest
ational hypertension or pre-eclampsia during the third trimester and 7
2 h after delivery. Heparin cofactor II levels in the pre-eclampsia gr
oup were depressed. The clinical relevance of this finding is the pote
ntial utility of heparin cofactor II plasma levels in the differential
diagnostic between non-proteinuric hypertension and pre-eclampsia. (C
) 1998 Lippincott-Raven Publishers.