Achieving board certification through the American Board of Internal Medicine (ABIM) is a pinnacle milestone for physicians. The ABIM exam assesses the clinical judgment, skills, and attitudes essential for excellent patient care. Whether you are seeking initial certification or maintaining your credentials, our comprehensive ABIM practice test resources are designed to help you succeed.
Preparing for the ABIM boards requires a strategic approach. With our free ABIM internal medicine practice questions, you can identify knowledge gaps and reinforce critical concepts. Start your journey toward becoming a board-certified internist today with our expert-verified study materials.
The ABIM internal medicine certification is valid for ten years. Maintaining certification requires participating in the ABIM MOC (Maintenance of Certification) program, which includes earning points every two years and passing a comprehensive assessment every ten years. Practice with the free ABIM - American Board of Internal Medicine practice test on PracticeTestGeeks (7 questions with answer explanations).
Numbers in brackets link to the official sources listed under Sources & last verified. Dates that have passed are removed automatically.
| Item | Detail | Source · Verified |
|---|---|---|
| Time limit | About 10 hours, four sessions of up to 2 hours[1] | American Board of Internal Medicine · Oct 25, 2026 |
| Passing score | Absolute standard, set by ABIM; pass/fail on the entire exam[1] | American Board of Internal Medicine · Oct 25, 2026 |
| Exam fee (Internal Medicine initial certification) | $1,430[2] | American Board of Internal Medicine · Oct 25, 2026 |
| Validity | Valid while participating in MOC[1] | American Board of Internal Medicine · Oct 25, 2026 |
| Delivery | Pearson test centers[1] | American Board of Internal Medicine · Oct 25, 2026 |
| Eligibility | 36 months of accredited residency training[3] | American Board of Internal Medicine · Oct 25, 2026 |
| Score release | Within 3 months of the last exam date[1] | American Board of Internal Medicine · Oct 25, 2026 |
| Late registration deadline (2027 exam) | Apr. 16 – Apr. 28, 2027[1] | American Board of Internal Medicine · Oct 25, 2026 |
| Late registration deadline (late registration fee) | $400 non-refundable late fee[2] | American Board of Internal Medicine · Oct 25, 2026 |
| Registration deadline (2027 exam) | Apr. 15, 2027[1] | American Board of Internal Medicine · Oct 25, 2026 |
| Registration opens (2027 exam) | Dec. 1, 2026[1] | American Board of Internal Medicine · Oct 25, 2026 |
| Testing window (Internal Medicine Certification Exam 2027) | Aug. 12, 16, 17, 25, 26, 2027[1] | American Board of Internal Medicine · Oct 25, 2026 |
According to American Board of Internal Medicine, “The examination pass-fail decision is based on your performance on the entire examination.”[1]
Prepare for the ABIM - American Board of Internal Medicine exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.
Question: Which intervention is most effective for improving muscle strength and function in an older adult with sarcopenia?
Answer: B. Progressive resistance training
Explanation:
Progressive resistance training is correct because muscle loads, not hormones or vitamins, drive the gain in strength and function that sarcopenia patients need. Adequate protein intake supports it.
Testosterone in eugonadal men is wrong because replacing a hormone that is already at a normal level does not add meaningful strength. Growth hormone is wrong because it does not reliably improve function in older adults and carries side effects. Vitamin B12 is wrong because it helps only when the patient is actually deficient, and nothing in the stem suggests that.
General rule: for age-related muscle loss, start with exercise and nutrition. Hormones and supplements are for a documented deficiency, not for the label of frailty.
Question: A 50-year-old woman with diffuse cutaneous systemic sclerosis presents with blood pressure 210/120 mm Hg, headache, and creatinine rising from 0.9 to 2.4 mg/dL. Which antihypertensive should be started first?
Answer: D. Captopril
Explanation:
Captopril is correct. Scleroderma renal crisis is driven by the renin-angiotensin system, so an ACE inhibitor treats the cause of the severe hypertension and the falling kidney function. It should be continued even if the creatinine climbs or dialysis becomes necessary.
Labetalol is wrong because it lowers pressure without blocking the angiotensin pathway behind the crisis. Amlodipine is wrong because it is too weak and not targeted for this emergency. Hydralazine is wrong because direct vasodilation can provoke more reflex renin release and does not protect the kidney.
General rule: new severe hypertension with rising creatinine in diffuse systemic sclerosis means scleroderma renal crisis, and the first drug is an ACE inhibitor.
Question: A patient has fever, confusion, thrombocytopenia, schistocytes on smear, and elevated LDH. Which underlying deficiency is most likely?
Answer: A. ADAMTS13 activity
Explanation:
ADAMTS13 activity is correct. Fever, confusion, low platelets, schistocytes and a high LDH describe thrombotic thrombocytopenic purpura, where ADAMTS13 is severely reduced, usually from an autoantibody. Large von Willebrand multimers then form platelet clots that shred red cells.
Factor VIII is wrong because its deficiency, hemophilia A, causes bleeding without a microangiopathic smear. Antithrombin III is wrong because its deficiency is an inherited tendency toward venous clots, without schistocytes. Protein C is wrong for the same reason: it is a thrombophilia, not a fragmenting hemolytic anemia.
General rule: schistocytes plus thrombocytopenia mean a microangiopathy. Send ADAMTS13 testing and begin plasma exchange without waiting for the result.
For a fuller set of questions on this topic, see our american board of internal medicine certification resource.
Start with the official ABIM material so you know the registration steps, the exam format and the policies that apply to you. Then work backward from your test window and decide how much time each subspecialty area needs.
Begin with a mixed set such as ABIM MCQ or the free ABIM practice test to find your weak areas. Then move to the focused sets, for example Cardiology, Nephrology and Infectious Disease, and spend extra time where you miss questions.
For every missed question, write down the general rule, not just the answer. Read the explanation, then restate why each wrong option fails. Come back to your missed items after a break to check that the rule stuck.
Because the exam runs about 10 hours in four sessions, practise answering in long blocks with short breaks so your stamina matches test day. Near the exam date, reread the official pages for your Pearson appointment and check your registration status.
Interactive ABIM - American Board of Internal Medicine resources on PracticeTestGeeks, free to start:
Click to flip and test your knowledge
Our comprehensive ABIM study guide breaks down essential information about the certification process. Explore the tabs below to understand the ABIM boards basics, format, registration details, and more.
Register early to avoid the substantial late fee. Many residency programs will cover or reimburse the initial ABIM exam cost for their residents.
Get instant access to free ABIM practice test questions, study guides, and flashcards. Start your journey to becoming board certified now.
To be listed as certified on the ABIM physician portal, you must meet all MOC requirements by their deadlines. Failure to do so will result in a status change to "Not Certified."
| Pros | Cons |
|---|---|
| ABIM exam preparation strengthens your knowledge across all domains | Exam anxiety can affect performance — practice tests help reduce it |
| Passing the exam proves competency to employers and clients | Registration fees are non-refundable if you miss your test date |
| Study materials and practice tests are widely available | Limited retake opportunities may apply with waiting periods |
| Exam-based credentials are portable across states and employers | Exam content updates periodically — use current study materials |
| Clear exam objectives help focus your study plan effectively | Testing center availability may require advance scheduling |
Try these questions from our free ABIM - American Board of Internal Medicine practice tests. The correct answer and an explanation follow each question.
Antimicrobial medications and bismuth should be avoided for ____ before testing in order to increase the diagnostic precision of the urea breath test and fecal antigen test.
Answer: C. 28 days
To improve the diagnostic accuracy of the urea breath test and fecal antigen test for detecting Helicobacter pylori infection, antimicrobial agents and bismuth should be avoided for 28 days before testing. These substances can interfere with the accuracy of the tests and may lead to false-negative results. It is important to withhold any antibiotics, proton pump inhibitors (PPIs), bismuth-containing medications, and other medications that can suppress or eradicate H. pylori during this period to ensure accurate test results. The specific duration of avoidance may vary depending on the specific test being used and the recommendations of the healthcare provider. It's always best to consult with a healthcare professional for specific instructions regarding medication and dietary restrictions before undergoing H. pylori diagnostic testing.
A 32-year-old woman with type 1 diabetes presents with recurrent hypoglycemia, nausea, and weight loss. Morning cortisol is undetectable. What additional test should be performed?
Answer: B. ACTH stimulation test
The ACTH (cosyntropin) stimulation test is the gold standard for diagnosing primary adrenal insufficiency (Addison disease) by assessing adrenal cortisol response.
A 44-year-old woman presents with polyuria, polydipsia, and a serum sodium of 148 mEq/L. Water deprivation test fails to concentrate urine (Uosm 180 mOsm/kg). After desmopressin administration, urine osmolality rises to 680 mOsm/kg. What is the diagnosis?
Answer: A. Central diabetes insipidus
A robust response to desmopressin (urine Osm >50% increase) confirms central DI, where ADH is deficient but renal tubules respond normally.
A 67-year-old man with CLL presents with worsening fatigue and pallor. Hemoglobin is 7.1 g/dL, MCV 92, reticulocyte count 8%. Direct antiglobulin test (DAT) is positive for IgG. LDH is elevated. What is the diagnosis?
Answer: A. Autoimmune hemolytic anemia (AIHA)
Warm AIHA is the most common hematologic complication of CLL, presenting with a positive DAT for IgG, elevated LDH, and increased reticulocyte count reflecting hemolysis.
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For a fuller set of questions on this topic, see our abim certification lookup resource.
For a fuller set of questions on this topic, see our abim physician lookup resource.
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