OB/GYN vs VT: ARDMS Exam Comparison
This page compares the ARDMS Obstetrics & Gynecology (OB/GYN) and Vascular Technology (VT) 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.
OB/GYN vs VT: Exam Comparison
| Factor | Obstetrics & Gynecology (OB/GYN) | Vascular Technology (VT) |
|---|---|---|
| Credential earned | RDMS | RVT |
| Question count | 170 | 170 |
| Exam duration | 3 hours | 3 hours |
| 2025 first-time pass rate | 80% | 70% |
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.
About the Vascular Technology (VT) Exam
The ARDMS Vascular Technology (VT) specialty exam earns the Registered Vascular Technologist (RVT) credential. It has the lowest first-time pass rate among all seven specialties (70% in 2025) and tests a deep understanding of hemodynamics, Doppler physics, carotid stenosis criteria, DVT protocols, peripheral arterial disease, and abdominal vascular assessment.
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 obstetrics & gynecology imaging should consider the OB/GYN exam first, as applied clinical knowledge transfers directly to board performance. Similarly, those working predominantly in vascular technology settings will find the VT 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 — 80% for OB/GYN and 70% for VT — underscore the importance of structured, domain-aligned preparation for whichever exam you choose first.
Dig Deeper Into Each Specialty
- Obstetrics & Gynecology (OB/GYN) exam prep · OB/GYN practice questions
- Vascular Technology (VT) exam prep · VT practice questions
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