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Comparative analysis of in vitro diagnostic medical devices and laboratory-developed tests: Insights from global regulation.
Research record from Health Policy, 2026-07-09. PMID 42447612.
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Tests
A complement blood test measures the levels and/or activity of a group of proteins that are part of the complement system. This system "complements" or enhances your body's defenses against infections and other diseases. Your immune system makes antibodies, which are proteins to fight disease-causing substances like viruses and bacteria. The proteins in the complement system will also help fight the infection or disease. These proteins work together in a sequence, with one protein activating the next.