What Are the Inflammation Markers? A Complete Guide to CRP, ESR, Ferritin and Chronic InflammationWhat Are the Inflammation Markers?
Inflammation is your body’s natural defence mechanism. When you develop an infection, injury, or illness, your immune system triggers inflammation to help protect and repair the body.
However, inflammation is not always obvious. Some people experience chronic low-grade inflammation for months or even years without realising it. This hidden inflammation may contribute to fatigue, joint pain, autoimmune conditions, cardiovascular disease, digestive problems, and other long-term health concerns.
Fortunately, several blood tests can help identify inflammation within the body. These are known as inflammation markers.
At Marylebone Diagnostic Centre in Central London, we offer a dedicated Inflammatory Panel designed to assess common inflammatory markers and provide valuable insights into your health.
What Are Inflammation Markers?
Inflammation markers are substances measured in blood that increase when the body is responding to infection, injury, autoimmune disease, or other inflammatory processes.
These markers do not diagnose a specific condition by themselves. Instead, they help doctors identify whether inflammation may be present and whether further investigation is needed.
Inflammation testing may help investigate:
- Persistent fatigue
- Joint and muscle pain
- Recurrent infections
- Autoimmune conditions
- Digestive disorders
- Cardiovascular risk
- Unexplained symptoms
- General health screening
The Main Inflammation Markers
C-Reactive Protein (CRP)
CRP is one of the most commonly used inflammatory markers.
It is produced by the liver and rises quickly when inflammation develops in the body. CRP is particularly useful for identifying acute inflammation caused by infection, injury, or autoimmune activity.
A raised CRP may be associated with:
- Bacterial infections
- Autoimmune diseases
- Rheumatoid arthritis
- Lupus
- Tissue injury
- Inflammatory bowel disease
High-Sensitivity CRP (hs-CRP)
High-sensitivity CRP measures very small amounts of inflammation that standard CRP tests may not detect.
Many clinicians use hs-CRP when assessing cardiovascular health and long-term inflammatory risk. Elevated hs-CRP levels have been linked with increased cardiovascular risk.
Erythrocyte Sedimentation Rate (ESR)
ESR measures how quickly red blood cells settle within a test tube.
Inflammation causes proteins to accumulate in the blood, making red blood cells settle faster than normal. ESR is often used when investigating chronic inflammatory conditions and autoimmune diseases.
A raised ESR may occur in:
- Rheumatoid arthritis
- Lupus
- Vasculitis
- Chronic infections
- Inflammatory disorders
Ferritin
Ferritin is best known as an iron storage protein.
However, ferritin can also rise during inflammation, even when iron levels are normal. This is why ferritin is often reviewed alongside other inflammatory markers.
High ferritin may be associated with:
- Chronic inflammation
- Liver disease
- Autoimmune conditions
- Metabolic syndrome
- Infection
Fibrinogen
Fibrinogen is involved in blood clotting but also acts as an inflammatory marker.
Raised fibrinogen levels may indicate ongoing inflammation and may be associated with cardiovascular risk factors.
White Blood Cell Count (WBC)
White blood cells help the body fight infection.
An elevated white blood cell count can sometimes indicate infection or inflammation and is often assessed alongside CRP and ESR.
Plasma Viscosity (PV)
Plasma viscosity measures the thickness of blood plasma.
Like ESR, it can help identify inflammation and is sometimes used when investigating chronic inflammatory conditions.
What Causes Inflammation?
Many different conditions can trigger inflammation.
Common causes include:
- Viral infections
- Bacterial infections
- Arthritis
- Rheumatoid arthritis
- Lupus
- Psoriasis
- Obesity
- Smoking
- Chronic stress
- Poor sleep
- Inflammatory bowel disease
- Cardiovascular disease
- Certain cancers
Symptoms That May Suggest Inflammation
Some people experience obvious symptoms.
Others have no symptoms at all.
Possible signs include:
- Fatigue
- Brain fog
- Joint pain
- Muscle aches
- Persistent headaches
- Digestive problems
- Recurrent infections
- Unexplained fever
- General malaise
Can You Have Inflammation Without Symptoms?
Yes.
Many individuals have low-grade chronic inflammation without noticing any symptoms.
This silent inflammation may be associated with:
- Cardiovascular disease
- Type 2 diabetes
- Obesity
- Metabolic syndrome
- Autoimmune disease
For this reason, many patients choose inflammation testing as part of their preventative health screening.
CRP vs ESR: What Is the Difference?
| Test | What It Measures | Best For |
|---|---|---|
| CRP | Protein produced by the liver during inflammation | Acute inflammation and infection |
| ESR | Rate red blood cells settle in blood | Chronic inflammation and autoimmune disease |
Doctors often request both tests together because they provide different information about inflammation.
Why Testing Inflammation Matters
Inflammation testing may help:
- Identify hidden health issues
- Monitor autoimmune disease
- Track treatment progress
- Investigate fatigue
- Assess cardiovascular risk
- Support preventative healthcare
Results should always be interpreted alongside symptoms, medical history, and other investigations.
Inflammatory Panel Testing in London
At Marylebone Diagnostic Centre, we offer a dedicated Inflammatory Panel for patients who wish to investigate possible inflammation or monitor existing conditions.
Learn more:
Our clinic is conveniently located near:
- Baker Street
- Marylebone
- Paddington
- Harley Street
- Regent’s Park
- Central London
- Westminster
Results are typically available within 24–42 hours depending on the tests requested.
Related Tests
You may also find these services useful:
Blood Tests London:
https://www.marylebonediagnosticcentre.com/private-blood-tests-london/
Vitamin D Testing:
https://www.marylebonediagnosticcentre.com/
Iron & Ferritin Testing:
https://www.marylebonediagnosticcentre.com/
Well Person Health Screening:
https://www.marylebonediagnosticcentre.com/
Frequently Asked Questions
What is the most important inflammation marker?
CRP is one of the most commonly used inflammation markers because it rises rapidly when inflammation occurs.
Can inflammation markers diagnose a disease?
No. They indicate inflammation may be present but cannot identify the exact cause.
Do I need to fast before an inflammation blood test?
Most inflammation markers do not require fasting, although other tests performed alongside them may have different requirements.
Can stress raise inflammation markers?
Chronic stress may contribute to low-grade inflammation and can influence inflammatory marker levels.
Can obesity increase inflammation?
Yes. Obesity is associated with chronic low-grade inflammation and may contribute to raised inflammatory markers.
How quickly do results come back?
Most results are available within 24–42 hours depending on the tests performed.
Should I get tested if I feel healthy?
Some patients choose inflammation testing as part of a preventative health assessment, particularly if they have risk factors for chronic disease.
Book an Inflammation Blood Test in London
If you are experiencing fatigue, joint pain, unexplained symptoms, recurrent infections, or simply want a better understanding of your health, inflammation testing may provide valuable insights.
Marylebone Diagnostic Centre offers private inflammation testing in Central London with fast turnaround times and convenient online booking.
Book online today:
https://www.marylebonediagnosticcentre.com/services/inflammatory-panel/
The process at Marylebone Diagnostic Centre
Getting tested is quick and simple.
- Book your appointment online or by phone.
- Have a blood sample taken by our experienced team.
- Your sample is analysed with modern technology.
- Results are available the same day.
- A doctor explains findings and suggests next steps.
The whole process takes under 15 minutes.
How do doctors interpret results?
A high marker level does not confirm one condition. It shows that your body is fighting something. Doctors may order further tests to pinpoint the cause.
For example:
- High CRP + fever → possible infection
- High ESR + joint pain → possible arthritis
- High ferritin + fatigue → possible chronic illness
This is why expert interpretation is important.
Lifestyle links to inflammation
Sometimes, inflammation is linked to lifestyle choices. Factors that can raise markers include:
- Poor diet high in processed foods
- Lack of exercise
- Smoking or heavy alcohol use
- Obesity
- Chronic stress
Improving lifestyle can often lower inflammation and reduce future health risks.
FAQs about inflammation markers
Inflammation markers are vital tools in modern medicine. They do not give a complete answer, but they highlight when the body is under stress. At Marylebone Diagnostic Centre, 73 Baker Street, London, we provide fast, accurate inflammation marker tests with same-day results. Our expert team helps you understand your health and take action early.
Book your inflammation marker test today at Marylebone Diagnostic Centre. Trusted testing, rapid results, central London location.
73 Baker Street, London
+44 7495 970109
marylebonediagnosticcentre.com
