Complement C3c

HematologyAlso known as: Complement component c3cAlso known as: C3cmg/dL

Measures the C3c complement protein fragment in blood.

Normal Range
70 – 176 mg/dL
mg/dL
Abnormal Levels
Consult your provider
Specimen Type
Blood

Why This Biomarker Matters

C3c reflects immune activation and complement cascade activity. Low levels suggest active infection, autoimmune disease, or genetic deficiency requiring further investigation and management.

Understanding Your Results

Normal Range

70 – 176 mg/dL

Overview

Complement C3c is a protein fragment produced during immune system activation as part of the complement cascade, a key defense mechanism against infection and inflammation. A C3c test measures this specific complement protein component, which reflects immune system activity. Low C3c levels may indicate increased consumption due to active infection, autoimmune disease (like lupus or vasculitis), or genetic deficiency. Abnormal levels help diagnose immune and inflammatory disorders.

Related Health Conditions

Conditions where Complement C3c is commonly tested

Related Health Goals

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

4491-7Primary
Complement C3c [Mass/volume] in Serum or Plasma
mg/dL
4485-9
Complement C3 [Mass/volume] in Serum or Plasma
mg/dL
15164-7
Complement C3 [Mass/volume] in Synovial fluid
g/L
38388-5
Complement C3 [Presence] in Serum or Plasma
43579-2
Complement C3 [Mass/volume] in Pleural fluid
mg/dL
6801-5
Complement C3 [Mass/volume] in Body fluid
mg/dL
43578-4
Complement C3 [Mass/volume] in Peritoneal fluid
mg/dL
43575-0
Complement C3 [Mass/volume] in Pericardial fluid
mg/dL
48420-4
Complement C3c [Mass/volume] in Body fluid
g/L

Available Lab Tests

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