SOAP notes are the foundation of clinical documentation. Whether you are a medical student on your first ward placement or a junior doctor beginning residency, mastering the SOAP format is non-negotiable. This guide covers every component in detail, with clinical examples and common mistakes to avoid.
What Is a SOAP Note?
The SOAP note is a structured method of clinical documentation developed by Dr Lawrence Weed in the 1960s as part of the Problem Oriented Medical Record (POMR) system. SOAP stands for:
- S — Subjective
- O — Objective
- A — Assessment
- P — Plan
This structure ensures that every clinical encounter is documented in a logical, reproducible format that any reader — whether a consultant, GP, or emergency doctor — can quickly interpret. It is used in hospitals, general practice, emergency departments, and outpatient clinics worldwide.
S — Subjective
The Subjective section captures the patient’s story in their own words. It includes:
Chief Complaint (CC)
A brief, direct statement of why the patient is presenting, ideally in their own words. For example: “Chest pain for 3 hours” or “Shortness of breath and leg swelling.”
History of Presenting Complaint (HPC)
This is the narrative of the current illness, expanded from the chief complaint. Use a systematic approach such as SOCRATES for pain:
- Site — Where exactly is it?
- Onset — When did it start? Was it sudden or gradual?
- Character — Describe the quality (sharp, dull, burning, crushing)
- Radiation — Does it spread anywhere?
- Associated symptoms — Nausea, vomiting, sweating, dyspnoea?
- Timing — Constant or intermittent? Worsening or improving?
- Exacerbating / relieving factors
- Severity — 0–10 pain scale
Relevant Past Medical History, Medications, and Allergies
Include conditions relevant to the current presentation. If the patient has known AF presenting with palpitations, that is highly relevant. A childhood appendicectomy probably is not, unless abdominal pain is the chief complaint.
O — Objective
The Objective section contains measurable, observable findings — things you can see, measure, or test. It includes:
Vital Signs
Always document all vitals: HR, BP (specify which arm if relevant), RR, SpO₂ (on air or oxygen — specify), temperature, and GCS or AVPU if relevant. In deteriorating patients, the NEWS2 score should be documented.
Physical Examination Findings
Document findings system by system, relevant to the presenting complaint. Use precise clinical language: not “heart sounds okay” but “HS I+II, no added sounds.” Not “chest clear” but “air entry equal bilaterally, no added sounds.”
Investigations
Include relevant results: bloods (with units and reference ranges if abnormal), ECG findings, imaging reports, urine dip. State which results are awaited.
A — Assessment
The Assessment is arguably the most intellectually demanding section — it is your synthesis. It includes:
Working Diagnosis
State your primary diagnosis or the most likely diagnosis based on the history and examination. This should not be vague: not “query cardiac cause” but “likely NSTEMI given troponin rise and inferolateral ST changes.”
Differential Diagnoses
List 2–4 differentials in order of likelihood. For each, briefly state the supporting evidence and what would make it more or less likely. This demonstrates clinical reasoning and ensures important diagnoses are not missed.
Severity and Risk Stratification
Where applicable, document validated risk scores: TIMI score for ACS, CURB-65 for pneumonia, Wells score for PE, Child-Pugh for cirrhosis. This demonstrates evidence-based practice and guides the Plan.
P — Plan
The Plan translates your assessment into action. It should be specific, actionable, and ideally structured around the same problems or systems as your Assessment.
Investigations
List investigations ordered or pending. Be specific: not “bloods” but “FBC, U&E, LFTs, CRP, serial troponins at 0h and 3h.”
Management
Document medications prescribed (with dose, route, and frequency), fluids, procedures, and any immediate interventions. For medications, state the indication where it is not obvious.
Monitoring
State what needs to be monitored and at what frequency: “NEWS2 observations 4-hourly, repeat ECG in 30 minutes.”
Communication and Escalation
Document discussions with seniors, referrals made, and what triggers should prompt re-escalation. This is medico-legally important and protects you if the patient deteriorates.
Disposition
State the immediate plan: admission to which ward, discharge with what safety-netting, or referral to which specialty.
Common SOAP Note Mistakes to Avoid
- Putting objective findings in the subjective section — “The patient states his oxygen saturations were 94%” belongs in Subjective; “SpO₂ 94% on air” belongs in Objective.
- Vague assessments — “Possible infection” is not an assessment. “Community-acquired pneumonia, CURB-65 score 2, moderate severity” is.
- Missing vital signs — Even in a routine clinic review, document at minimum BP, HR, and weight if relevant.
- No differential diagnoses — An assessment with only one diagnosis is a red flag for anchoring bias. Always consider at least 2–3 alternatives.
- Unsigned notes — Every SOAP note must be signed with your name, grade, bleep/contact number, and date/time. In electronic systems, ensure your authentication is correctly linked to the entry.
SOAP Note Example: Chest Pain
S: 67-year-old male presenting with 3 hours of central crushing chest pain radiating to the left arm. Associated sweating and nausea. No dyspnoea. Known hypertension and T2DM. Medications: metformin 1g BD, amlodipine 5mg OD. No known drug allergies.
O: Appears distressed. Diaphoretic. HR 95 bpm, BP 152/94 mmHg, RR 18, SpO₂ 98% on air, Temp 36.8°C. JVP not elevated. HS I+II, no added sounds. Chest clear bilaterally. No peripheral oedema. ECG: sinus rhythm, 2mm ST elevation in leads V1–V4. Troponin I: 0.08 ng/mL (reference <0.04).
A: Primary diagnosis: STEMI (anterior). ST elevation in V1–V4 with troponin rise. Differential: aortic dissection (no tearing character, BP equal in both arms), Prinzmetal’s angina (less likely given sustained ST elevation and troponin rise).
P: Activate primary PCI pathway immediately. Aspirin 300mg PO stat, ticagrelor 180mg PO stat, IV morphine 5mg titrated, IV metoclopramide 10mg, GTN 400mcg SL if systolic BP >90mmHg. Continuous cardiac monitoring. Repeat troponin at 3h. Cardiology registrar contacted — patient accepted for cath lab.
Digital and AI-Assisted SOAP Notes
AI tools can significantly accelerate SOAP note writing, particularly for students who find the blank-page problem challenging. MedDraftPro’s AI Medical Report Generator can take your clinical bullet points and produce a structured SOAP note in seconds, formatted to professional standards.
However, the best approach for learning is to write your first draft manually, then use the AI version as a comparison. Where they differ, interrogate why — this is one of the most effective ways to develop clinical documentation skills.
Summary
The SOAP note is a clinical skill, not just a form. Mastering it requires understanding why each section exists and what each reader will be looking for. A well-written SOAP note tells the patient’s story, demonstrates your clinical reasoning, guides safe management, and protects you medico-legally. It is one of the most important skills you will develop as a clinician.