‌Protein appears in nearly all body tissues, along with your enzymes, blood, and cerebrospinal fluid (CSF). Healthy CSF has a low amount of protein.‌ If you show symptoms of an infection or nervous ...

Protein S activity is a test to judge your risk of blood clots. Blood clots that form in the veins are dangerous. Protein S is a substance that controls the blood clotting mechanism and prevents ...

Cerebrospinal fluid (CSF) is a clear bodily fluid that cushions and protects your brain and spinal cord. A CSF protein test involves taking a fluid sample from your spinal column using a needle. This ...

Serum protein electrophoresis (SPEP) is a laboratory technique that’s used to determine the levels of some types of proteins in a blood sample. There are a number of reasons why a doctor may order ...