The difference between a referral that gets actioned and one that sits in a triage pile is usually not clinical — it's structural. Consultants and triage teams make decisions about your referral in 60–90 seconds. In that time, they need to understand: why you're referring, what you've already done, and what you're asking them to do.
Here's how to write referrals that work.
The structure that gets results
Every referral should answer five questions in this order:
1. What's the problem? One sentence. "Persistent right iliac fossa pain for 6 weeks, not responding to conservative management." Not a paragraph. Not the full history. One clear sentence that tells the reader what they're dealing with.
2. What's the clinical context? Brief relevant history: duration, severity, red flags present or absent, relevant PMH, relevant medications. Three to five sentences maximum. The triager doesn't need your entire clinical record — they need the information that determines urgency and pathway.
3. What have you already done? Investigations performed and results, treatments tried and response, other referrals already made. This prevents the specialist repeating work you've already done and demonstrates that you've managed appropriately in primary care. If you haven't done anything yet and you're referring to find out what to do — that's fine, but say so explicitly.
4. Why are you referring now? What changed? Why today rather than last month? This helps the triager understand urgency. "Pain worsening despite analgesia, now affecting sleep and work" is more informative than "for further management."
5. What do you want? "Please see and advise." "Please consider for surgical intervention." "Requesting urgent imaging." Be specific about what you're asking for. Vague referrals get vague responses.
The 2WW referral — different rules
Two-week-wait cancer referrals are a specific format with specific requirements. The referral form is usually standardised by your local cancer alliance, and incomplete forms get bounced back — delaying your patient's pathway.
For 2WW referrals specifically:
State the suspected cancer pathway clearly: "Suspected lower GI cancer — 2WW referral per NICE NG12."
Include the specific clinical feature triggering the referral: "Rectal bleeding with change in bowel habit >4 weeks in a patient aged >50." This maps directly to the NICE referral criteria and tells the triager you've met the threshold.
Include FIT result if relevant. For lower GI 2WW referrals, a FIT result >10 µg/g strengthens the referral. Include the number.
Don't pad. 2WW referrals need to be lean and criteria-focused. Extraneous clinical history slows triage.
Common mistakes
The referral that's actually a letter to nobody. "Dear Colleague, I would be grateful if you could see this patient..." — who is the colleague? Which department? Which pathway? Route the referral correctly and address it specifically.
The referral that's too long. Three pages of clinic letters pasted into the referral form. The triager won't read them. Summarise the relevant information; attach supporting documents if needed, but the referral letter itself should be readable in under a minute.
The referral with no question. "For your opinion" is not a question. "Is this patient suitable for biologic therapy given their failure of two DMARDs?" is a question. Clear questions get clear answers.
The referral that omits what you've tried. If you refer a patient with knee pain without mentioning that they've already tried physiotherapy, the specialist will send them back for physiotherapy. Document what's been done.
The referral that doesn't mention red flags. If you've considered and excluded red flags, say so: "No red flags for cauda equina (normal bladder function, no saddle anaesthesia, no bilateral leg weakness)." This tells the triager you've thought about urgency and they don't need to second-guess you.
Advice and Guidance first
Many referral pathways now offer Advice and Guidance (A&G) as an alternative to formal referral. Before referring, check whether your question could be answered through A&G — it's faster for the patient and often resolves the issue without a secondary care appointment.
Good A&G questions: "This patient has X findings on investigation Y — does this warrant referral or can I manage in primary care?" Bad A&G questions: "Please advise on this patient" with no specific question.
iatroX's clinical search can help formulate referral questions — querying guidelines to check whether you've met referral criteria or whether primary care management should continue.
iatroX offers AI clinical search covering NICE referral guidance and guidelines summaries for UK primary care. Built by a practising NHS GP.