Interleukin-6 (IL-6)
Pro-inflammatory cytokine. Elevated in infection, autoimmune disease, and severe COVID-19. Drives CRP production.
Test Information
Reports In
Same day (6 hours)
Parameters
1
Requisites
Blood Sample
Sample Type
Blood
Measures
Serum IL-6 level
Identifies
Inflammation, sepsis, cytokine release syndrome, rheumatoid arthritis, COVID-19 severity
What is the IL-6 Test?
Interleukin-6 (IL-6) is a pro-inflammatory cytokine that plays a central role in the immune response. Elevated IL-6 indicates active inflammation and is particularly useful in assessing the severity of infections, autoimmune flare-ups, and cytokine storm (as seen in severe COVID-19).
Why Should You Take This Test?
IL-6 is a key inflammatory mediator. Used in research and some clinical settings (e.g., tocilizumab eligibility in severe COVID-19). CRP is often used as surrogate.
Who Should Get Tested?
Severe Infections
Monitors inflammatory response severity.
Autoimmune Disease Flares
Tracks disease activity.
Sepsis Assessment
Predicts outcomes in critical illness.
Warning Signs — When Should You Get This Test?
Common Conditions Detected
Frequently Booked Together
Tests commonly ordered alongside IL-6 for a complete picture
CRP
Another inflammation marker
CBC
Infection assessment
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