Infection Markers in Primary & Urgent Care
Blood tests are requested every day across primary care, urgent care and front-door services — but interpreting them safely is not always straightforward.
A raised CRP can feel like it should give us an answer.
A normal WCC can feel reassuring.
Raised neutrophils can push us towards infection.
But in real practice, inflammatory markers rarely give us a diagnosis on their own.
This course has been designed to help clinicians interpret CRP, white cell count and neutrophils in clinical context, with a focus on practical decision-making in primary care, urgent care, UTC, SDEC and front-door assessment settings.
The aim is not to memorise numbers in isolation. The aim is to understand what the results may be telling you, what they cannot tell you, and how they should influence your assessment, treatment decisions, escalation and safety-netting.
What this course covers:
In this module, we explore:
- What CRP can and cannot tell us
- Why CRP is not a diagnosis
- How to interpret CRP alongside WCC and neutrophils
- Common infection-marker patterns seen in urgent and primary care
- When raised markers may support infection
- When inflammatory markers can mislead
- How to avoid treating numbers in isolation
- How to use results to support escalation, review or discharge
- Practical safety-netting for patients with abnormal inflammatory markers
Who is this course for?
This course is suitable for clinicians working in:
- Primary care
- Urgent care
- UTC
- SDEC
- Out-of-hours services
- Front-door assessment areas
- Community and same-day services
It is particularly useful for clinicians who regularly review blood results and need to make safe decisions around infection, inflammation, antibiotics, escalation and discharge.
What is included?
This module includes:
- A practical teaching video
- Downloadable handout infographics
- A CRP traffic-light guide
- An infection-marker pattern table
- A FITS decision-making framework
- A safety-netting and discharge checklist
- Case-based learning activities
- Knowledge-check questions
The key message
CRP is not a diagnosis.
It is one piece of clinical context.
This course will help you move beyond asking, “Is the CRP raised?” and instead ask:
- Does this result fit the history?
- Does it fit the examination?
- Does it fit the observations?
- Does it change my plan?
- Can this patient be safely managed in the community?
By the end of the module, you should feel more confident using infection markers to support clinical reasoning — without letting the numbers replace the patient in front of you.
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1Welcome to the Module
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2Course Content
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3Course Close