Close

Complement 1q (C1q)

Complement 1 (C1) is part of the C1 complex, which comprises three subunits, C1q, C1r, C1s, and is the first component of the serum complement system. C1q recognizes and binds to immunoglobulin complexed to antigen and initiates the complement cascade. C1 deficiency is associated with an increased incidence of immune complex disease (systemic lupus erythematosus, polymyositis, glomerulonephritis, and Henoch-Schonlein purpura). Low C1 levels have also been reported in patients with abnormal immunoglobulin levels (Bruton and common variable hypogammaglobulinemia and severe combined immunodeficiency). Anti-C1q anti-serum assays are used to quantitate C1q antigen levels.

Have questions about a product?

Contact us to learn more about Meridian’s molecular or immunoassay reagent portfolio. We want to hear from you!

Contact A Specialist

Get In Touch With A Specialist

Have questions about a product? Want to learn more about Meridian’s molecular or immunoassay reagent portfolio? We want to hear from you!

By submitting your information in this form, you agree that your personal information may be stored and processed in any country where we have facilities or service providers, and by using our “Contact Us” page you agree to the transfer of information to countries outside of your country of residence, including to the United States, which may provide for different data protection rules than in your country. The information you submit will be governed by our Privacy Statement.

Learn More About Us

Learn More

Welcome to

Please select your country to continue

Continue
EN