A question from Norbert in Cameroon: I would like to know when to use the following pair of words: compliment and complement. Click below to hear the answer: Hi Norbert. Thanks for your question – ...

A complement blood test measures how well complement proteins in your blood support immune defense. The complement system helps antibodies fight germs and clear foreign substances. Complement testing ...

Atypical hemolytic–uremic syndrome is a genetic, life-threatening, chronic disease of complement-mediated thrombotic microangiopathy. Plasma exchange or infusion may transiently maintain normal levels ...