Complement C4a

What this laboratory test evaluates

DetailsComplement 43a is a protein fragment produced during activation of the complement system, a key part of the immune response. Measuring C4a can help evaluate immune activation and inflammation, and may be useful in investigating autoimmune or inflammatory conditions.

What type of sample is required for this test?Plasma

Test ResourcesFor more information, please consult your healthcare provider.

Additional test information

Complement 43a is a protein fragment produced during activation of the complement system, a key part of the immune response. Measuring C4a can help evaluate immune activation and inflammation, and may be useful in investigating autoimmune or inflammatory conditions.

Collection and processing

• Sample type: Plasma
• Fasting: No
• Estimated laboratory processing: Results should arrive 4 – 7 business days after the lab receives samples.

How Sunridge uses laboratory information

Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.

Before requesting this test

Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.