Maternal serum unconjugated estriol and urine estriol concentrations in normal and high-risk pregnancy.
Serum unconjugated estriol levels and urinary estriol levels of concurrent specimens were compared for 6 normal and 6 high-risk subjects throughout the last trimester of pregnancy. Free estriol values in serum exhibited a close correlation with urinary estriol values for both the normal (r = 0.91) and high-risk (r = 0.92) groups. The results of this study indicate that the assessment of high-risk pregnancies now accomplished principally by urinary estriol assays may be performed by more convenient and rapid radioimmunoassays developed for quantification of free estriol in serum.
D004964:Estriol / Q000097:blood* / Q000652:urine; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood* / Q000652:urine; D011263:Pregnancy Trimester, Third; D011254:Pregnancy in Diabetics / Q000097:blood; D012306:Risk
D004964:Estriol