OSMOSIS USMLE® Step 2 Review 2025

1. Introduction to Biostatistics (3) – Samples

2. Epidemiology & Population Health (5)

3. Study Design & Types of Studies (8)

4. Measures of Association (3)

5. Distributions of Data (3)

6. Correlation & Regression (4)

7. Principles of Testing & Screening (4)

8. Study Interpretation & Conclusions (14)

1. Anxiety Disorders (5) – Samples

2. Childhood-onset Disorders (3)

3. Eating & Impulse-Control Disorders (1)

4. Mood Disorders (5)

5. Personality Disorders (4)

6. Psychotic Disorders (2)

7. Somatic Symptom Disorders (1)

8. Substance Use Disorders (11)

1. Infectious & Immunologic Disorders (3) – Samples

2. Anemias & Cytopenias (10)

3. Coagulation Disorders (6)

4. Traumatic & Vascular Disorders (1)

5. Neoplasms (6)

1. Congenital Disorders (3) – Samples

2. Diseases of the Myocardium (1)

3. Diseases of the Pericardium (2)

4. Dyslipidemia (1)

5. Dysrhythmias (6)

6. Heart Failure (2)

7. Hypertension (2)

8. Hypotension (1)

9. Infectious, Immunologic & Inflammatory Disorders (2)

10. Ischemic Heart Disease (3)

11. Valvular Heart Disease (4)

12. Vascular Disorders (7)

1. Adrenal Disorders (7) – Samples

2. Congenital Disorders (1)

3. Diabetes & Endocrine Pancreas Disorders (7)

4. Multiple Endocrine Neoplasia (1)

5. Parathyroid Disorders (1)

6. Pituitary Disorders (3)

7. Thyroid Disorders (6)

1. Adverse Drug Effects (1) – Samples

2. Congenital Disorders (1)

3. Liver & Biliary Disorders (8)

4. Oral Cavity, Salivary & Esophagus Disorders (8)

5. Pancreatic Disorders (2)

6. Peritoneal Disorders (1)

7. Stomach, Small Intestine, Colon, Rectum, Anus (24)

8. Infectious, Immunologic & Inflammatory Disorders (13)

9. Neoplasms (9)

10. Signs & Symptoms (9)

11. Traumatic & Mechanical Disorders (10)

1. Infancy & Childhood (9) – Samples

2. Adolescence (4)

3. Adulthood (10)

4. Older Adulthood (1)

1. Immunodeficiency Disorders (1)

2. HIV/AIDS (1)

3. Immunologic Disorders (1)

1. Abuse (2) – Samples

2. Fluid, Electrolyte & Acid-Base Disorders (15)

3. Genetic, Metabolic & Developmental Disorders (9)

4. Infectious & Immunologic Disorders (14)

5. Multiple Trauma (2)

6. Nutrition (5)

7. Shock (7)

8. Signs, Symptoms & Ill-defined Disorders (27)

9. Toxins & Environmental Extremes (5)

1. Adverse Drug Effects (1) – Samples

2. Congenital Disorders (1)

3. Degenerative & Metabolic Disorders (7)

4. Infectious & Inflammatory Disorders (12)

5. Neoplasms (2)

6. Signs & Symptoms (6)

7. Traumatic & Mechanical Disorders (10)

1. Cerebrovascular Disease (6) – Samples

2. Congenital Disorders (2)

3. Cranial & Peripheral Nerve Disorders (6)

4. Degenerative Disorders (3)

5. Ear Disorders (2)

6. Eye & Eyelid Disorders (10)

7. Spine & Nerve Root Disorders (1)

8. Global Cerebral Dysfunction (5)

9. Infectious, Immunologic & Inflammatory Disorders (6)

10. Metabolic Disorders (1)

11. Movement Disorders (5)

12. Neoplasms (11)

13. Neuromuscular Disorders (2)

14. Paroxysmal Disorders (7)

15. Sleep Disorders (1)

16. Traumatic & Mechanical Disorders (5)

1. Prenatal Care (10) – Samples

2. Obstetric Complications (22)

3. Labor & Delivery (10)

4. Puerperium (4)

5. Newborn (16)

6. Adverse Drug Effects (1)

7. Systemic Disorders Affecting Pregnancy (7)

1. Adverse Drug Effects (1) – Samples

2. Infectious, Immunologic & Inflammatory Disorders (5)

3. Metabolic & Regulatory Disorders (9)

4. Neoplasms (1)

5. Signs & Symptoms (3)

6. Traumatic & Mechanical Disorders (3)

1. Breast Disorders (15) – Samples

2. Female Reproductive System (37)

3. Male Reproductive System (6)

1. Congenital Disorders (1) – Samples

2. Pleura, Mediastinum & Chest Wall Disorders (4)

3. Infectious & Inflammatory Disorders (13)

4. Neoplasms (1)

5. Obstructive Airway Disease (2)

6. Interstitial & Restrictive Lung Diseases (2)

7. Respiratory Failure & Pulmonary Vascular Disorders (5)

8. Traumatic & Mechanical Disorders (10)

1. Infectious, Immunologic & Inflammatory Disorders (14) – Samples

2. Neoplasms (8)

3. Traumatic & Mechanical Disorders (6)