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Anaphylaxis: assessment and referral after emergency treatment

  • NICE guideline
  • Reference number: NG258
  • Published:  27 May 2026
  • Guidance
  • Tools and resources
  • Information for the public
  • Evidence
Download guidance (PDF)
  • Overview
  • Using this guideline
  • Documenting suspected anaphylaxis
  • Timing of blood samples
  • Period of observation
  • Admission to inpatient care
  • Referral to a specialist allergy service
  • Discharge from A&E or inpatient care
  • Terms used in this guideline
  • Recommendations for research
  • Finding more information and committee details
  • Update information

Using this guideline

People have the right to be involved in discussions and make informed decisions about their care, as described in NICE's information about shared decision making.

Healthcare professionals should follow our general guidelines for people delivering care:

  • Babies, children and young people's experience of healthcare

  • Decision making and mental capacity

  • Medicines adherence

  • Medicines optimisation

  • Multimorbidity

  • Patient experience in adult NHS services

  • Shared decision making

  • Transition from children's to adults' services

Making decisions using NICE guidelines explains how we use words to show the strength (or certainty) of our recommendations, and has information about prescribing medicines (including off-label use), professional guidelines, standards and laws (including on consent and mental capacity), and safeguarding.


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