Estriol - serum

Alternative names:

serum estriol

Normal values:

serum:

• week 34: 5.3 to 18.3 ng/ml
• week 35: 5.2 to 26.4 ng/ml
• week 36: 8.2 to 28.1 ng/ml
• week 37: 8.0 to 30.1 ng/ml
• week 38: 8.6 to 38.0 ng/ml
• week 39: 7.2 to 34.3 ng/ml
• week 40: 9.6 to 28.9 ng/ml

Note: ng/ml = nanograms per milliliter

What abnormal results mean:

Greater-than normal-estriol levels may indicate:

• adrenal tumor
• multiple pregnancy
• ovarian tumor
• testicular tumor

Lower-than-normal estriol levels may indicate:

• adrenogenital syndrome
• congenital anomalies
• failing pregnancy
• fatal dysmaturity
• fetal death
• fetal distress
• hypopituitarism
• menopause
• placental insufficiency
• preeclampsia/eclampsia
• Stein-Leventhal syndrome
• Turner's syndrome