Macromolecular Protein Electrophoresis (Manual Qualitative) in Serum/Plasma

What This Test Measures

Macroprotein electrophoresis separates large proteins (such as immunoglobulins, fibrinogen, and other glycoproteins) based on their size and charge. The manual qualitative method visually assesses bands of protein density, which can reveal abnormal accumulations or patterns. This is typically done using a gel electrophoresis technique, where proteins migrate through the gel under an electric field.

Why It’s Done

Doctors may order this test if you have symptoms like unexplained weight loss, bone pain, frequent infections, or swelling in tissues. It’s also used to monitor conditions like multiple myeloma, where abnormal proteins (such as monoclonal gammopathies) build up in the blood.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is then separated into serum or plasma (the liquid part without clotting factors) for testing. This test does not require fasting, but your doctor may provide specific instructions.

What to Expect Before the Test

No special preparation is needed beyond standard blood draw precautions (e.g., avoiding strenuous activity 24 hours before). If you’re on blood-thinning medication, let your doctor know before the test.