If your doctor thinks you might have lupus, they may ask you to take blood tests to check for antibodies in your blood. The most common antibody test is called the antinuclear antibody (ANA) test.

Complement component 3, often called C3, is an essential protein of the immune system. This protein plays a vital role in the body’s innate immune system, providing the first line of defense against ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

If you have diabetes or prediabetes, regularly monitoring your A1C blood sugar level is important for managing your condition and maintaining optimum health. A1C monitoring can also be used to ...