A veterinary SOAP note has four sections. Subjective is the story: what the owner reports and your overall impression of the patient. Objective is the data: temperature, pulse, respiration, exam findings by body system, and diagnostic results. Assessment is your thinking: the problem list and your ranked differentials, with the reasoning visible. Plan is what happens next: diagnostics, treatment, what you told the client, and when you'll recheck. If you can answer four questions — what's the story, what did I find, what do I think is going on, what am I going to do about it — you can write a good SOAP note.
The rest of this article shows what belongs (and doesn't belong) in each section, walks through a complete example, and covers the mistakes that make notes slow to write and useless to read. If you want ready-made templates for specific visit types, we've published eight copy-ready SOAP note examples as a companion piece.
Where the format comes from (and why it's worth following)
SOAP isn't a bureaucratic invention — it's a thinking tool. Dr. Lawrence Weed introduced the problem-oriented medical record in his 1968 New England Journal of Medicine paper "Medical Records That Guide and Teach," arguing that a record organized around problems, with the clinician's reasoning written down, actively improves clinical decision-making rather than just documenting it.
Veterinary schools still teach it that way. Washington State University's documentation guide tells students the record "should stand on its own, providing a comprehensive review of the case," and that it "serves as a legal record of diagnoses considered, treatment given, communications with clients, and your reasoning for any action (or lack of action)." Those two sentences are the whole standard: complete enough to hand over, reasoned enough to defend.
S — Subjective: the story
The Subjective section captures what can't be measured: the owner's report and your overall impression of the patient.
What belongs here:
- The presenting complaint, in the owner's timeline: what changed, when it started, how it's progressed
- Home observations: appetite, drinking, urination, defecation, behavior, activity
- Relevant history the owner volunteers: diet changes, new pets, travel, that raided rubbish bin
- Your general impression: bright/alert/responsive, quiet, depressed, improving, worse
A weak S: Owner says dog not right.
A working S: Vomited 4x since yesterday evening (food, then bile, no blood). Refused breakfast, still drinking. Raided rubbish bin ~36h ago per owner. No toxin access known. Otherwise normal at home.
The difference is the timeline. Histories are most of the diagnosis in first-opinion practice, and they are impossible to reconstruct a week later. Write the story the way the owner told it, compressed — not the way it looks after you've already decided what's wrong.
O — Objective: the data
The Objective section is everything you measured or observed directly: vitals, physical exam findings by system, and diagnostic results.
What belongs here:
- TPR, weight, body condition score
- Exam findings, system by system — including relevant normals
- In-house and external lab results, imaging findings
- Gradings and scores where they exist (lameness grade, dental grade, hydration estimate) — numbers can be compared at the next visit; adjectives can't
A weak O: Exam fine except ears.
A working O: BAR. T 38.5°C, HR 96, RR 24. Left ear: erythematous canal, moderate dark discharge, painful on palpation. Right ear unremarkable. Remainder of exam within normal limits.
Two things to notice. First, the relevant normal ("right ear unremarkable") is documented — a normal you wrote down is evidence you checked. Second, "within normal limits" is acceptable shorthand for the systems you examined and found normal, if you actually examined them.
The honest caveat: the S/O boundary is blurry, and that's fine. WSU's guide notes that "the line between the subjective and objective data can often be indistinct, so it is common to combine the entries for these two sections" under a single S/O heading. If your team reads combined S/O clearly, combine away — the format serves the record, not the other way around.
A — Assessment: the thinking
The Assessment is the section that separates a medical record from a transcript. It's your analysis of S and O: what problems exist, what's most likely causing them, and why.
What belongs here:
- A problem list, most significant first
- For each significant problem: differentials, ranked, with the reasoning stated
- What the data supports and what it rules out (or fails to rule out)
A weak A: Otitis.
A working A: Otitis externa, left ear — first documented episode. Underlying cause not yet established: primary infection vs early allergic skin disease (watch for recurrence, pruritus elsewhere). Foreign body less likely — canal visualized to eardrum, none seen.
The WSU rubric grades student notes on precisely this: differentials "assessed as to what is most likely in this animal (or herd) and why (as well as what is unlikely and why)." That's not academic busywork. The ranked-and-reasoned assessment is what lets a colleague continue the case, what shows a board reviewer you thought before you treated, and what reminds you in three months why you did what you did.
If the visit is genuinely simple — a healthy patient, a routine booster — the assessment can be one line ("healthy adult, appropriate for vaccination"). An honest one-liner beats a padded paragraph. What the assessment can never be is empty or boilerplate: it's the one section that must be thought, not typed.
P — Plan: what happens next
The Plan turns the assessment into actions. WSU's guide breaks it into three buckets, and they're worth keeping as a mental checklist: diagnostics (what else you'll run and why), treatment (what you're doing about each problem), and client communication (what you told the owner, what they decided, and what happens if things change).
A weak P: Treated. Recheck if worse.
A working P:
1. Ear cytology performed — see results in O; discussed findings with owner.
2. Ear cleaning demonstrated; topical treatment dispensed per clinic protocol.
3. Owner advised: improvement expected within days; recheck in 10–14 days to
confirm resolution BEFORE stopping treatment. Return sooner if worsening,
head tilt, or pain increases.
4. Flagged: if this recurs, work up for underlying allergic disease.
Notice what's carrying the weight: the client communication lines. "Recheck criteria given" is the sentence that protects you when the owner doesn't come back and the ear gets worse. Specific treatments and doses belong in your record too, of course — pulled from your practice's own protocols and inventory system, which is why the examples here just point to them.
One more habit worth stealing from the teaching hospitals: end the day's entry with a short task list — the boxes still open on the case (lab callback, follow-up call, referral letter). WSU calls it the master plan; whatever you call it, it's the difference between a plan and a wish.
A complete worked example
Here's the whole thing assembled, at realistic first-opinion length:
Patient: "Oscar" — 3 y MN Domestic Shorthair, 5.1 kg
Visit: Left ear discomfort, scratching for 4 days
S: Scratching left ear and head-shaking for ~4 days, worse at night per
owner. No previous ear problems. Indoor cat, no new pets or products at
home. Eating and behaving normally otherwise.
O: BAR. T 38.4°C, HR 190, RR 28. Left ear: canal erythematous with moderate
dark ceruminous discharge, painful on palpation; eardrum visualized,
intact, no foreign body. Right ear unremarkable. Skin: no lesions or
pruritus elsewhere. Remainder of exam within normal limits.
Ear cytology (left): findings recorded on lab sheet (attached).
A: Otitis externa, left ear, first documented episode — consistent with
cytology findings. No current evidence of generalized skin disease;
underlying allergy possible if recurrent. Foreign body ruled out on
otoscopy.
P: 1. Ear cleaned in clinic; owner shown technique.
2. Topical treatment dispensed per clinic protocol; course explained.
3. Recheck 10–14 days — owner told to complete course even if ear looks
normal sooner, and to return early if worsening or new signs.
4. If recurrence: discuss allergy workup. Noted in patient flags.
That's roughly 170 words for a complete, defensible record of a routine sick visit. It answers all four questions, its reasoning is visible, and Oscar's next vet — or the same vet next year — can pick it up cold.
The five mistakes that ruin SOAP notes
- Story contaminated by conclusions. "Owner reports otitis" — no, the owner reported head-shaking. Keep the S as reported; your interpretation belongs in A. If the A turns out wrong, an uncontaminated S is what lets you (or the next clinician) re-reason the case.
- An Objective section with no normals. If you only record abnormals, nobody can tell what you checked from what you skipped. Key relevant normals — the other ear, the heart you auscultated — earn their line.
- The empty Assessment. Findings in O, treatment in P, nothing in between. This reads as "treated without thinking" even when you thought carefully. Write the one sentence of reasoning down.
- Client conversations left out. Declined diagnostics, chosen options, recheck criteria, warnings given. The WSU guide is blunt about this: plans for client communication belong in the record with "detail sufficient for effective communication with the medical team AND for legal purposes."
- Copy-paste rot. Yesterday's note pasted forward, growing stale errors with every duplication. Teaching hospitals explicitly penalize notes that "copy & paste previous entries or just reiterate a previous SOAP" — a recheck note should document change, and it's allowed to be short.
Making it fast
Knowing what belongs in each section is half the battle; the other half is not writing it all from scratch forty times a week. Two proven moves:
- Template your common visit types. The AVMA's advice: spend fifteen minutes writing a template in your own voice for your most common appointment type, because "editing something written in your own voice is almost always faster than editing a generic version — or starting from scratch for each record." Our SOAP note examples by visit type are built to be raw material for exactly that.
- Write closer to the consult. Notes written hours later are slower and worse — the details have evaporated. If your drafts routinely pile up until closing time, that's a fixable workflow problem; we've written about how to stop writing SOAP notes after hours.
Frequently asked questions
How long should a SOAP note be? As long as the case demands and no longer. A routine recheck can be four lines; an emergency needs timestamps and detail. The test isn't length — it's whether a colleague could take over the case from your note alone.
Can veterinary nurses and technicians write parts of the SOAP? Commonly, yes — history-taking and objective data entry are often shared, with the veterinarian owning the assessment and plan. Follow your practice's policy and your jurisdiction's rules; whoever writes an entry should be identifiable in the record, and each entry should be signed.
Do I SOAP every problem separately? In teaching hospitals, usually yes — it's how reasoning is taught and assessed. In practice, most clinicians SOAP the case as a whole and break out separate problems when a case is genuinely complex. WSU's guide describes exactly this difference between academic and private-practice notes; use the granularity the case needs.
Is SOAP required by law? The format itself usually isn't — but complete, contemporaneous medical records are required essentially everywhere, and SOAP is the structure the profession (and every accredited vet school) uses to meet that bar. If a board ever reviews your records, a clean SOAP structure works in your favor.