Complement C3a
Labcorp
Broadest draw-site network nationwide.
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Labcorp
Broadest draw-site network nationwide.
Quest Diagnostics
Same-day appointments in most metros.
Complement C3a is a protein fragment produced during activation of the complement system, a key part of the immune response. Measuring C3a can help evaluate immune activation and inflammation, and may be useful in investigating autoimmune or inflammatory conditions.
Labcorp
Quest Diagnostics
Quest Diagnostics lists no special preparation for this test.
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