serum concentrations of sex hormone binding globulin ( shbg ) , pregnancy associated alpha 2-glycoprotein ( alpha 2-pag ) , caeruloplasmin ( cp ) , alpha 1-antitrypsin ( alpha 1-at ) and transferrin ( tf ) , unconjugated and total estrone , and unconjugated estradiol-17 beta were measured twice at a 4-5 week interval in 43 cases of early normal pregnancy ( gestational weeks 6-19 ) .
C0032961
pregnancy
C0014942
estrone