A high sensitivity C-reactive protein test measures very small amounts of CRP. It is sometimes used to refine cardiovascular risk, but the result is easy to misuse. CRP rises for many reasons, and a high number does not identify where inflammation comes from.
hs-CRP is not the same question as standard CRP
Both tests measure C-reactive protein, which the liver produces in response to inflammation. Standard CRP is commonly used when clinicians are investigating more substantial inflammation or infection. hs-CRP detects lower levels and may be used as one component of cardiovascular risk assessment.
Why one high result may mislead
A recent infection, injury, hard training session, poor sleep and several chronic conditions can affect CRP. Testing during an illness can make a cardiovascular interpretation unreliable. A clinician may repeat an unexpected result when you are well rather than acting on one measurement.
Use it as a risk modifier
hs-CRP does not replace LDL cholesterol, blood pressure, diabetes assessment, smoking history or family history. Current cardiovascular guidance treats it as an additional marker that may refine risk in selected cases. It is not a stand alone heart attack prediction.
What to do with the result
Do not start supplements or medicines solely because hs-CRP is elevated. Check whether you were ill around the test, review the rest of your cardiovascular profile, and discuss whether repeat testing or clinical evaluation is appropriate.
Already have your results? Smart Health Report can organize an existing lab report into body system summaries, applicable risk indices and a practical discussion guide.
Analyse an Existing ReportQuestions to ask before you act
- Was the sample collected under the correct conditions?
- Does the laboratory flag match its own reference range and units?
- Is this one isolated result or a persistent trend?
- Could illness, medication, pregnancy or exercise affect it?
- What decision would another test or clinical consultation change?
Source and medical note
MedlinePlus: C-reactive protein testing
This article is general health information, not a diagnosis or treatment plan. Laboratory ranges and individual decisions vary. Discuss concerning results and symptoms with a qualified healthcare professional.