✦ ADD-ON TEST
Immunology
Complement C3
Complement C3 is a central component of the complement system. Low levels may occur in active SLE, some glomerulonephritides, and other immune disorders.
Why a doctor may order this
To evaluate complement consumption in autoimmune disease, especially SLE and glomerulonephritis.
Why you may need this
In lupus or certain kidney diseases — complement levels fall with active disease.
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Frequently Asked Questions
To evaluate complement consumption in autoimmune disease, especially SLE and glomerulonephritis.
In lupus or certain kidney diseases — complement levels fall with active disease.
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Some blood tests require fasting. The Elab app and clinic team will show the relevant preparation instructions before sample collection.
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