The McMurray test is a physical examination doctors use for knee injuries. A positive McMurray test means a person likely has a meniscal tear, otherwise known as a knee injury. The femur and tibia are ...

The fibrinogen blood test is used to assess how well the protein called fibrinogen — also called coagulation factor I — performs in the blood and to measure its levels in your blood. The test is also ...

A lupus diagnosis is based on clinical symptoms (past and present), a family history (the medical history of close family members such as your grandparents, parents, siblings, aunts, uncles, cousins) ...

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 ...

A fasting blood test requires you to avoid eating or drinking anything for some time before your test. The amount of time to fast varies for different tests. It’s generally in the range of 8 to 12 ...