Last Updated: Oct 18, 2026
No. of Questions: 204 Questions & Answers with Testing Engine
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| Certification Vendor: | American Society for Microbiology (ASM) |
|---|---|
| Exam Name: | American Board of Medical Microbiology Certification Examination |
| Exam Number: | ABMM |
| Real Exam Qty: | 200–220 |
| Exam Price: | $450 (ASM members), $575 (non-members) |
| Exam Format: | Multiple choice, Case-based items, Single best answer |
| Certificate Validity Period: | 3 years, requires recertification |
| Available Languages: | English |
| Exam Duration: | 240 minutes |
| Passing Score: | Criterion-referenced, determined per exam form |
| Recommended Training: | ASM Education & Training Resources |
| Exam Registration: | ABMM Application & Registration |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored or authorized test centers |
| Pre Condition: | Doctoral degree in microbiology or related field; plus 3 years of experience, or 2 years CPEP training, or completion of ACGME/CCM/RCPSC-accredited fellowship/residency |
| Official Syllabus URL: | https://asm.org/certifications/american-board-of-medical-microbiology-abmm |
| Section | Weight | Objectives |
|---|---|---|
| Directing Laboratory Testing Functions | 44.5% | - Test selection, validation, quality control and interpretation - Up-to-date practices, standards, technologies and emerging diseases |
| Consulting with Other Medical Professionals | 25% | - Clinical consultation, result interpretation and guidance - Education, research and professional development - Public health, epidemiology and outbreak investigation |
| Directing Laboratory Administrative Functions | 19% | - Accreditation, licensure and regulatory requirements - Information management and reporting - Personnel management, competency assessment and training - Process improvement and risk management - Laboratory operations, budgeting and compliance |
| Ensuring Safety and Security in the Laboratory | 11.5% | - Security, waste management and emergency response - Biological, chemical and physical safety |
The ABMM exam is American Society of Microbiology's official certification test — passing it earns the American Board of Medical Microbiology (ABMM) Diplomate credential at the Professional / Expert level. It demands genuine, working knowledge rather than theory alone, which is why candidates who prepare casually tend to stumble.
Protection and delivery, both in writing. Delivery: the ABMM product reaches your mailbox within one minute of payment; if nothing arrives within 2 hours, check spam and contact support for an immediate resend. Refund: sit the corresponding ABMM exam within 60 days of purchase, and if you fail, apply with a scanned enrollment slip and the official Score Report PDF within 2 days after the exam — refunds complete within 7 days. The policy covers the corresponding exam only; attempts within 3 days of purchase, exams never actually taken, free materials, and expired orders are excluded, and the candidate name must match the payer name. Prefer to keep going? Exchange your product for two free exam products of equal value instead — the update service on your original purchase stays active.
American Society of Microbiology recommends these training options:
Formal training fills the gaps; the 204 practice questions for the ABMM exam from Exams-boost then sharpen them into exam-ready skill.
The American Society of Microbiology ABMM exam costs $450 (ASM members), $575 (non-members) per attempt, with Criterion-referenced, determined per exam form as the passing mark. Fail, and $450 (ASM members), $575 (non-members) is payable again — the price of walking in half-prepared. A practical safeguard: practice with Exams-boost until your timed mock results clear Criterion-referenced, determined per exam form comfortably, then book the ABMM exam.
Booking runs through American Society of Microbiology's official channels:
Note that delivery of the exam itself is via Online proctored or authorized test centers.
Doctoral degree in microbiology or related field; plus 3 years of experience, or 2 years CPEP training, or completion of ACGME/CCM/RCPSC-accredited fellowship/residency Eligibility requirements come from American Society of Microbiology and can be revised, so confirm the current rules on the official exam page: https://asm.org/certifications/american-board-of-medical-microbiology-abmm before committing to a American Society of Microbiology ABMM registration.
The American Society of Microbiology ABMM exam is organized into 4 knowledge areas, with Directing Laboratory Testing Functions (44.5%), Ensuring Safety and Security in the Laboratory (11.5%), Directing Laboratory Administrative Functions (19%) among the most significant. Allocate study time to match those weights, and see the outline section above for the complete list.
200–220 questions in 240 minutes — that is the American Society of Microbiology ABMM exam in numbers. The per-question budget is tight, and hesitation is what eats it. Train the pace deliberately: run full timed simulations in the Exams-boost engine, practice committing to an answer and moving on, and the real ABMM exam will feel familiar instead of frantic.
You can — the Exams-boost free demo covers the American Society of Microbiology ABMM material, so download some sample questions and answers first and judge quality yourself. Once you buy, 365 days of free updates are included; after that period, extend the update service at a 50% discount from your member zone.
A patient with recent abdominal surgery develops a fever, abdominal pain, and a wound infection. Gram stain of the wound exudate reveals a mixture of Gram-negative rods and Gram-positivebacilli. Anaerobic culture yields a foul-smelling, Gram-negative rod that is bile-esculin positive. The MOST likely organism is:
Correct Answer: A 🗳️
The erm gene in Staphylococcus aureus confers resistance to which class(es) of antibiotics via modification of the ribosomal target site?
Correct Answer: D 🗳️
A Gram-positive rod is isolated from the blood culture of a neonate with sepsis. The organism exhibits weak beta-hemolysis on sheep blood agar, is catalase-positive, hydrolyzes esculin in the presence of bile, and demonstrates characteristic "tumbling" motility in a wet mount prepared from a broth culture incubated at 25°C. Which organism is most likely?
Correct Answer: B 🗳️
A Gram stain of cerebrospinal fluid (CSF) from a 2-year-old child with meningitis shows small, pleomorphic Gram-negative coccobacilli. Culture on chocolate agar yields growth, but there is no growth on standard 5% sheep blood agar unless streaked near a colony of Staphylococcus aureus. This phenomenon indicates a requirement for which growth factor(s)?
Correct Answer: C 🗳️
A clinical microbiology laboratory is using isothermal nucleic acid amplification techniques for rapid detection of Mycobacterium tuberculosis in sputum. Compared to conventional PCR, isothermal methods offer the advantage of:
Correct Answer: D 🗳️
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