AB vs FE: ARDMS Exam Comparison

This page compares the ARDMS Abdomen (AB) and Fetal Echocardiography (FE) exams side by side. Both are ARDMS-administered specialty examinations, but they differ in clinical scope, content focus, career setting, and 2025 pass-rate data.

AB vs FE: Exam Comparison

Factor	Abdomen (AB)	Fetal Echocardiography (FE)
Credential earned	RDMS	RDMS
Question count	170	170
Exam duration	3 hours	3 hours
2025 first-time pass rate	73%	75%

About the Abdomen (AB) Exam

The ARDMS Abdomen (AB) specialty exam covers the liver, gallbladder, biliary system, pancreas, kidneys, spleen, retroperitoneum, and abdominal vasculature. It is one of the most commonly pursued RDMS specialty registrations and rewards systematic, organ-by-organ preparation aligned to the official content outline.

About the Fetal Echocardiography (FE) Exam

The ARDMS Fetal Echocardiography (FE) specialty exam is among the most clinically specialized credentials in diagnostic ultrasound. It covers normal fetal cardiac development, the full spectrum of congenital heart defects, fetal arrhythmias, cardiac Doppler assessment, and genetic associations with structural heart disease.

Which Exam Should You Take First?

The right choice depends on your clinical background, your current employer's needs, and your long-term career goals. Sonographers with strong clinical experience in abdomen imaging should consider the AB exam first, as applied clinical knowledge transfers directly to board performance. Similarly, those working predominantly in fetal echocardiography settings will find the FE exam more immediately supported by their daily practice.

Both credentials are valuable additions to a multi-specialty credential portfolio. The 2025 first-time pass rates — 73% for AB and 75% for FE — underscore the importance of structured, domain-aligned preparation for whichever exam you choose first.

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