- LMP (Last Menstrual Period): tanggal haid terakhir
- EDD (Estimated Due Date): perkiraan tanggal lahir
- GA (Gestational Age): usia kehamilan
- CRL (Crown-Rump Length): panjang janin
- BPD (Biparietal Diameter): diameter kepala janin
- HC (Head Circumference): lingkar kepala janin
- AC (Abdominal Circumference): lingkar perut janin
- FL (Femur Length): panjang tulang paha janin