How to Pass MRCOG Part 1: A Complete Study Guide (2026)

The MRCOG Part 1 examination is the gateway to a career in obstetrics and gynaecology. With pass rates historically hovering between 30% and 40%, it is one of the most challenging postgraduate medical exams in the UK. But with the right strategy, the right resources, and a disciplined study plan, you can pass it on your first attempt. This guide is written by someone who did exactly that.

Understanding the Exam Format

Before you open a single textbook, you need to understand what you are up against. MRCOG Part 1 consists of 200 Single Best Answer (SBA) questions split across two papers of 100 questions each. You have 2 hours and 30 minutes per paper (5 hours total), with a 1-hour lunch break between them. That gives you roughly 1 minute and 30 seconds per question.

There is no negative marking, which means you should never leave a question unanswered. If you are running out of time, make your best guess. A blank answer is always wrong; a guess has a 20% chance of being right.

The pass mark is determined using the Angoff method, which means it varies between sittings but typically falls between 60% and 70%. The RCOG holds two sittings per year, in January and June. The exam fee is currently £580 for UK candidates and £635 for international candidates.

The 15 Knowledge Areas and 4 Domains

The Part 1 syllabus is organised into 15 knowledge areas grouped under 4 domains. Understanding this structure is critical because it tells you where the questions come from:

Domain 1: Cell Function (approximately 35-50 questions)

Physiology: 15-20 questions. Reproductive physiology, maternal physiology in pregnancy, fetal physiology, and placental physiology are perennial favourites.
Endocrinology: 12-15 questions. The hypothalamic-pituitary-ovarian axis, thyroid function in pregnancy, and adrenal disorders are heavily tested.
Biochemistry: 8-12 questions. Acid-base balance, haemoglobin physiology, and renal biochemistry appear regularly.

Domain 2: Human Structure (approximately 28-42 questions)

Anatomy and Surgical Anatomy: 15-20 questions. Pelvic anatomy, blood supply of the uterus, nerve supply to pelvic organs, and surgical planes are high-yield.
Embryology: 8-12 questions. Development of the reproductive tract, congenital anomalies, and sex determination.
Genetics: 5-10 questions. Mendelian inheritance, chromosomal abnormalities, and genetic screening.

Domain 3: Measurement and Manipulation (approximately 38-57 questions)

Data Interpretation and Statistics: 12-18 questions. Sensitivity, specificity, likelihood ratios, study design, and basic statistical tests.
Pharmacology: 10-15 questions. Mechanisms of action, pharmacokinetics in pregnancy, tocolytics, and anaesthetic agents.
Biophysics: 5-8 questions. Ultrasound physics, radiation safety, and laser principles.

Domain 4: Illness (approximately 40-60 questions)

Pathology: 12-18 questions. Cervical pathology, gestational trophoblastic disease, ovarian tumour classification, and placental pathology.
Clinical Management: 12-18 questions. Pre-eclampsia management, antepartum haemorrhage, ectopic pregnancy, and miscarriage management.
Immunology: 5-8 questions. Immune tolerance in pregnancy, autoimmune conditions, and immunisations.
Microbiology: 5-8 questions. TORCH infections, sexually transmitted infections, and sepsis in pregnancy.

The 6-Month Study Plan

Six months is the sweet spot for Part 1 preparation. Too short and you cannot cover the breadth of content; too long and you lose momentum. Here is how to structure it:

Months 1-2: Foundation Building

Start with the highest-yield topics: Anatomy, Physiology, and Endocrinology. These three areas alone can account for 40-55 questions. Use a primary textbook such as Basic Sciences for Obstetrics and Gynaecology (Chard & Lilford) or the relevant chapters from Dewhurst's Textbook of Obstetrics and Gynaecology.

During this phase, aim for 15-20 questions per day from a question bank. The goal is not to score highly. It is to identify the patterns of what is being asked and calibrate your understanding.

Months 3-4: Broadening Coverage

Move to Pathology, Clinical Management, Pharmacology, and Statistics. These are the areas where clinical experience helps, but you still need to know the underlying science. For statistics, focus on the concepts rather than complex calculations: the exam tests whether you understand what a p-value means, not whether you can compute one.

Increase your daily question count to 25-30. Start using spaced repetition for questions you get wrong. If you are not using a system that schedules reviews automatically, you are wasting time re-studying material you already know.

Month 5: Lower-Yield Topics and Gap-Filling

Cover Biophysics, Immunology, Microbiology, Embryology, Genetics, and Biochemistry. These are lower-yield individually, but collectively they account for 35-50 questions. You cannot afford to ignore them.

This is also the time to review your analytics. Which topics are you scoring below 60% in? Those are your gaps. Spend extra time on them.

Month 6: Mock Exams and Targeted Revision

Do at least 3-4 full mock exams under timed conditions. Analyse each one: which topics pulled your score down? Go back and study those topics specifically. In the final two weeks, focus entirely on spaced repetition reviews and your weakest areas.

Recommended Resources

Primary textbook: Basic Sciences for Obstetrics and Gynaecology (Chard & Lilford) or relevant chapters from Dewhurst's
Anatomy: Last's Anatomy for pelvic anatomy; anatomical diagrams you can label from memory
Statistics: Essential Medical Statistics (Kirkwood & Sterne), Chapter 1-12 covers everything you need
Question bank: A bank with original, guideline-referenced questions and detailed explanations
RCOG eLearning (StratOG): The official RCOG resources are worth reviewing, though the question volume is limited

The Spaced Repetition Strategy

The single most effective change you can make to your study routine is adopting spaced repetition. When you answer a question incorrectly, you need to see it again, but not tomorrow. The optimal time to review is just before you would forget it. Modern algorithms like FSRS (used by Anki 23.10+ and MRCOG AI) calculate this interval automatically.

A practical approach: do your daily new questions in the morning, and your spaced repetition reviews in the evening. This creates two touchpoints per day with the material and leverages the spacing effect across a single day.

Exam Day Tips

Pace yourself. 100 questions in 150 minutes = 1.5 minutes each. Flag difficult questions and return to them. Do not spend 5 minutes on one question.
Read the stem carefully. Many mistakes come from misreading what is being asked. Look for qualifiers like "most likely," "most appropriate," and "first-line."
Never change your answer unless you have a clear reason. Your first instinct is usually correct.
Answer every question. No negative marking means a guess is always better than a blank.
Eat a proper lunch. You have a 1-hour break. Use it. Your brain needs glucose for Paper 2.

Final Thoughts

MRCOG Part 1 is hard, but it is passable with systematic preparation. The candidates who fail are usually those who start too late, study passively (reading without testing), or ignore their weak areas. Be honest about your gaps, use active recall and spaced repetition, and sit enough mock exams to know what the real thing feels like.

You are not competing against the exam. You are competing against the version of yourself that does not prepare properly. Start early, stay consistent, and trust the process.