Assessing gestational age

G. N. Smith, K. A. Frey, T. R.B. Johnson

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Decision making in obstetrics is based on accurate knowledge of fetal gestational age. Menstrual dating based on the last menstrual period is an accurate method for estimating gestational age. Other reliable indicators are fundal height, quickening, the date that the fundus reaches the umbilicus and the date that fetal heart tones are first auscultated. Combinations of these data approach the reliability of menstrual dating. Biochemical assays are useful in early pregnancy. Ultrasound is indispensable when the clinical situation is questionable.

Original languageEnglish (US)
Pages (from-to)215-220
Number of pages6
JournalAmerican family physician
Issue number2
StatePublished - 1986

ASJC Scopus subject areas

  • Family Practice


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