Skip to main content
Intermediate Technical IVT

gestational age assessment

Clinical evaluation to determine the duration of pregnancy using various dating methods and fetal measurements.

Full Definition

Gestational age assessment involves the systematic evaluation of pregnancy duration using multiple clinical tools including last menstrual period dating, ultrasound biometry, and physical examination findings. Accurate gestational age determination is crucial for timing of interventions, interpretation of screening tests, and delivery planning. First-trimester ultrasound provides the most accurate dating, while later assessments may use multiple parameters including fetal growth measurements and maternal history to establish or confirm gestational age.

Usage

Usage note: May be abbreviated as GA assessment; accuracy decreases with advancing pregnancy.

In Context

  • "Gestational age assessment by ultrasound revealed a discrepancy of two weeks from LMP dating." — First trimester ultrasound report
  • "The comprehensive gestational age assessment included crown-rump length measurement and maternal menstrual history." — Obstetric consultation note

Also known as

pregnancy dating gestational age determination GA assessment

Don't confuse with

fetal age assessment conception dating

Editors from these organisations have used our services since 1998

Reuters BBC Oxford University Press Penguin Random House Springer Microsoft Suncor Energy United Nations Fisher Investments IBM The Home Depot KODAK CHEVRON