FE vs OB/GYN: ARDMS Exam Comparison
This page compares the ARDMS Fetal Echocardiography (FE) and Obstetrics & Gynecology (OB/GYN) 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.
FE vs OB/GYN: Exam Comparison
| Factor | Fetal Echocardiography (FE) | Obstetrics & Gynecology (OB/GYN) |
|---|---|---|
| Credential earned | RDMS | RDMS |
| Question count | 170 | 170 |
| Exam duration | 3 hours | 3 hours |
| 2025 first-time pass rate | 75% | 80% |
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.
About the Obstetrics & Gynecology (OB/GYN) Exam
The ARDMS OB/GYN specialty exam has the highest first-time pass rate among all seven specialties (80% in 2025), but its content breadth is substantial. It covers the full spectrum of obstetric and gynecologic ultrasound: normal and abnormal pregnancy, fetal anatomy survey, biometry, Doppler surveillance, and gynecologic pathology.
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 fetal echocardiography imaging should consider the FE exam first, as applied clinical knowledge transfers directly to board performance. Similarly, those working predominantly in obstetrics & gynecology settings will find the OB/GYN 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 — 75% for FE and 80% for OB/GYN — underscore the importance of structured, domain-aligned preparation for whichever exam you choose first.
Dig Deeper Into Each Specialty
- Fetal Echocardiography (FE) exam prep · FE practice questions
- Obstetrics & Gynecology (OB/GYN) exam prep · OB/GYN practice questions
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See all ARDMS specialty comparisons → | Practice-question hub →