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OSR6160 Olympus C4 Reagent (Complement 4 Reagent)


Intended Use

OSR6160 Olympus C4 reagent, also known as Complement 4 Reagent is used for the quantitative determination of Complement 4 (C4) in human serum on Beckman Coulter AU analyzers.

Brand: Beckman Coulter
Manufacturer SKU: OSR6160
Analyzer Type: Chemistry Analyzer
Analyzer Series: AU Analyzer Series
Test Type: Immunochemistry / Specific Protein Test
Test Name: Complement C4
SKU: OSR6160 Category:


  • Manufacturer: Beckman Coulter OSR6160
  • Country of Origin: Ireland
  • Application: Reagent
  • Test Type: Immunochemistry / Specific Protein Test
  • Number of Tests: 4 X 260 Tests
  • Test Name: Complement C4
  • UNSPSC Code: 41116010
  • Volume: 4 x 10 mL & 4 x 8 mL
Understanding C4 (Complement 4)

C4 (Complement 4) is part of the Complement system, a group of proteins in the blood that play a role in inflammation. It’s specifically involved in the classical complement pathway, meaning its levels decrease only when this pathway is active. In diseases where only the alternate pathway is activated, C4 levels remain normal. Testing C4 levels helps diagnose immune disorders, especially those related to complement deficiencies.


The C4 test relies on measuring how light scatters when immune complexes form in a solution. Turbidimeters gauge the reduction of light due to various factors like reflection, absorption, or scatter.

During the test, the decrease in transmitted light (or increase in absorbance) caused by particles in the solution forming complexes during the antigen-antibody reaction serves as the basis for analysis.


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