CRP (C-Reactive Protein)
Also called: C-Reactive Protein, CRP, Quantitative CRP
A fast-responding inflammation marker — useful for tracking infection or autoimmune flare-ups.
- Duration
- 5 min
- Report
- Same day
- Sample
- Blood
- Fasting
- Not needed
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What this test is
CRP is a protein the liver releases within hours of any inflammation or infection. Unlike ESR, which takes days to rise, CRP responds quickly — making it useful for tracking response to antibiotics or monitoring autoimmune flare-ups. Normal is under 6 mg/L; values 10–40 typically indicate viral infection, mild inflammation, or recent injury; values above 100 suggest serious bacterial infection.
When you need this test
- Suspected bacterial infection
- Tracking response to antibiotics
- Monitoring rheumatoid arthritis or other autoimmune disease
- After surgery — to detect early infection
- Unexplained fever
How to prepare
- No fasting required.
- Tell us if you have recently taken NSAIDs (ibuprofen, naproxen) or steroids — they can suppress CRP.
- Avoid intense exercise just before the test.
Why DiagnoHouse for this test
NABL-accredited lab
Quality-audited blood, urine, and stool analysis.
Home collection
Free across Pimpri-Chinchwad. Sample picked up at your time slot.
Same-day reports
Most pathology reports ready within 4 hours of collection.
Calibrated equipment
Analysers calibrated daily; quality controls run with every batch.
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Erythrocyte Sedimentation Rate (ESR)
A non-specific blood test that flags inflammation anywhere in the body.
- Duration
- 5 min
- Report time
- 4 hr report
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Complete Blood Count (CBC)
A standard blood test that checks red cells, white cells, platelets and 22 related markers.
- Duration
- 5 min
- Report time
- 4 hr report
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FAQs
How is CRP different from ESR?
CRP rises within hours and falls within days. ESR takes days to rise and weeks to fall. Doctors often order both for a full inflammation picture.What does a high CRP mean?
It confirms inflammation but does not say where. Your doctor uses it with symptoms and other tests to find the source.Should I retest after antibiotics?
Yes — a falling CRP at 48–72 hours suggests antibiotics are working.Is hs-CRP a different test?
Yes — high-sensitivity CRP (hs-CRP) uses a finer assay and is used for cardiovascular risk assessment, not infection. Mention to us if your doctor specifically wants hs-CRP.
Need help choosing?
Not sure if this is the right test for you? Have a doctor's note? Call or WhatsApp — guidance is free.
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