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Glossary Term
A research study that compares a particular outcome (such as lung cancer) in groups of individuals who are alike in many ways but differ by a certain characteristic (for example, female nurses who smoke compared with those who do not smoke).
Article
Research record from GMS Hyg Infect Control, 2026-06-05. PMID 42483474.
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.
Indicators
Complement C2 (752 aa, ~83 kDa) is encoded by the human C2 gene. This protein is involved in post-translational protein processing and complement activity.
Indicators
Complement C3 (1663 aa, ~187 kDa) is encoded by the human C3 gene. This protein plays a role in complement-mediated immunity.
Indicators
Complement C5 (1676 aa, ~188 kDa) is encoded by the human C5 gene. This protein is involved in complement-mediated immunity.
Indicators
Complement component C6 (934 aa, ~105 kDa) is encoded by the human C6 gene. This protein is involved in complement-mediated host defense responses.
Indicators
Complement component C7 (843 aa, ~94 kDa) is encoded by the human C7 gene. This protein is involved in insertion of the membrane attack complex in lipid bilayers.
Indicators
Complement component C9 (559 aa, ~63 kDa) is encoded by the human C9 gene. This protein plays a role in complement-mediated bacterial cell lysis.
Tests
A complete blood count, or CBC, is a group of blood tests that measure the number and size of the different cells in your blood. A CBC measures:
Article
Research record from Front Immunol, 2026-09-01. PMID 42745795.
Tests
A comprehensive metabolic panel (CMP) is a routine blood test that measures 14 different substances in a sample of your blood. It provides important information about your metabolism (how your body uses food and energy) and the balance of certain chemicals in your body.
