RH Study Guide 2026
Everything you need to pass the RH exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
RH exam key facts
- The AHG Registered Herbalist credential has no written exam: Part 2 of the peer-reviewed application requires three case histories, two letters of recommendation, assessments of sample cases and a materia medica section. Source
- Applicants for the AHG Registered Herbalist credential have no time limit for completing and submitting either Part 1 or Part 2 of the application. Source
- The AHG Registered Herbalist application fee is $100 for AHG members and $175 for non-members, is non-refundable and is paid with Part 2; Part 1 has no fee. Source
- Registered Herbalist applicants whose application was scored "Pending" should contact the AHG Admissions Coordinator for details on reapplying. Source
📋 RH Exam Format at a Glance
📚 RH Topics to Study (18)
✍️ Sample RH Questions & Answers
1. Which of the following is a fundamental principle of herb safety & contraindications as it applies to Registered Herbalist?
A fundamental principle of herb safety & contraindications in Registered Herbalist is the systematic evaluation and adherence to established industry standards, which ensures consistency, quality, and regulatory compliance across all professional activities.
2. What is the primary function of red blood cells?
Red blood cells, or erythrocytes, contain hemoglobin, a protein that binds to oxygen in the lungs. Their primary function is to transport this oxygen from the lungs to all the tissues and organs throughout the body, which is essential for cellular respiration and energy production. They also carry carbon dioxide back to the lungs to be exhaled.
3. Which of the following is a fundamental principle of intake & clinical history methods as it applies to Registered Herbalist?
A fundamental principle of intake & clinical history methods in Registered Herbalist is the systematic evaluation and adherence to established industry standards, which ensures consistency, quality, and regulatory compliance across all professional activities.
4. Which term refers to a plant's scientific name?
Binomial nomenclature refers to the scientific naming system for species, consisting of two parts: the genus and the specific epithet. This standardized system, established by Carl Linnaeus, provides a universal and unambiguous way to identify plants, regardless of regional common names. Accurate identification through binomial nomenclature is crucial in herbal medicine to ensure the correct plant with the desired medicinal properties is used.
5. In the context of herbal formula compounding, what role does continuous professional development play for RH practitioners?
Continuous professional development is essential in herbal formula compounding because it ensures RH practitioners remain current with evolving standards, technologies, and best practices, maintaining competency throughout their careers.
6. Which of the following is a fundamental principle of ahg professional ethics as it applies to Registered Herbalist?
A fundamental principle of ahg professional ethics in Registered Herbalist is the systematic evaluation and adherence to established industry standards, which ensures consistency, quality, and regulatory compliance across all professional activities.
🎯 Free RH Practice Tests
📖 RH Guides & Articles
What Practice Test Geeks adds beyond an AI chat for RH
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length RH mock exam — 150 questions in 180 minutes with a 75% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed RH question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable RH cheat sheet you can print or save as a PDF.
- RH flashcards built from the same question bank.
- Free RH practice tests with the correct answer shown after each question.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- americanherbalistsguild.com — Test dates, renewal, test delivery, fees, exam format, retake policy, score release, time limit · verified Oct 2026