Electrophoresis of proteins
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 this test. SPEP is used to help diagnose and monitor a variety of different diseases or disorders that have abnormal proteins or protein levels. Electrophoresis is not usually used by itself to diagnose a disease. Instead, it’s used along with other laboratory tests to provide more information to help with diagnosis.
The various proteins in the body perform different functions. This means that high or low levels of the five protein types examined during the test can point to different illnesses. Keep in mind that these are just clues. Further investigation will usually be needed to make a definitive diagnosis.
- Sample of blood serum
- We perform the test daily