Hadlock Fetal Weight Formula - Scientific Formula
Obstetrics & Gynecology Equation
Standard Calibration Equation:
Log10(EFW) = 1.335 - (0.0034 * AC * FL) + (0.0316 * BPD) + (0.0457 * AC) + (0.1623 * FL) - AC length corrections
Accuracy Bounds & Limits:
While mathematical calculators evaluate demographic models, extreme variance (hyperthyroidism, dialysis cases, muscular bodybuilders, pregnancy) can trigger output errors. Weight and clearance assessments must follow separate personalized titration grids.