Description of the blood test:

Serum Protein Electrophoresis (SPEP) is a laboratory technique used to separate the proteins in the blood into five distinct groups (fractions) based on their electrical charge and size. These fractions are Albumin and four types of Globulins (Alpha-1, Alpha-2, Beta, and Gamma). By visualizing the distribution of these proteins, doctors can identify specific patterns that indicate inflammation, kidney or liver disease, malnutrition, or the presence of abnormal “clones” of immune cells.

What Does the Test Represent?

• Goal: To measure the proportion of different protein fractions and detect abnormal protein peaks.
• Main Application: Screening for Multiple Myeloma, evaluating chronic inflammation, and diagnosing liver or kidney disorders.
• Method: Capillary electrophoresis or agarose gel electrophoresis.

Collection Recommendations (General)

• Timing: Blood should be drawn in the morning.
• Fasting: Overnight fasting (8–12 hours) is recommended to avoid interference from lipids (fats) in the blood.
• Material: Venous blood (serum).
• Specific Rules: Avoid heavy physical exertion for 24 hours. Inform your doctor about any medications, especially those containing iron or certain antibiotics, as they can sometimes interfere with the migration of proteins on the gel.

Factors Influencing the Result

• Factors Altering Levels: Recent infections, vaccinations, or trauma can cause a temporary rise in the globulin fractions (the “acute phase response”).
• Dehydration: Can lead to a false increase in the concentration of all protein fractions.
• Pregnancy: Naturally alters protein levels, typically decreasing albumin and increasing certain globulin fractions.

When to Take This Test?

• Recommendations: If you have unexplained bone pain, frequent infections, fatigue, or if other blood tests show high total protein or high calcium levels.
• Importance: This is the primary “searchlight” test used to find an M-protein (M-spike), which is a hallmark of plasma cell cancers like Multiple Myeloma.

Medical Interpretation

• Crucial Note: The interpretation of an SPEP graph is a highly specialized clinical task requiring expertise in hematology and clinical chemistry. A single “spike” or “dip” must be correlated with clinical symptoms. Only a specialist can “fine-tune” these results by analyzing the specific wave patterns.
• M-Spike (Monoclonal Peak): A sharp peak in the Gamma or Beta region, often indicating a plasma cell disorder.
• Polyclonal Gamma Increase: A broad rise in the Gamma region, usually representing a normal immune response to chronic infection or liver disease.
• Low Albumin: May indicate malnutrition, liver disease (decreased production), or kidney disease (loss of protein in urine).

Possible Further Investigations

• Immunofixation Electrophoresis (IFE): A follow-up test to identify exactly which type of antibody is causing an M-spike (IgG, IgA, etc.).
• Free Light Chain Assay (FLC): To detect small protein fragments associated with certain blood cancers.
• 24-Hour Urine Protein Electrophoresis (UPEP): To check if abnormal proteins are leaking into the urine.
• Bone Marrow Biopsy: If a monoclonal peak is confirmed.
• Consultation with a Hematologist.

When Does the Next Step Make Sense?

• If an “M-spike” is identified, the next step is immediate—performing immunofixation to characterize the protein and further imaging to protect the bones and kidneys. If the pattern shows general inflammation, the focus shifts to finding the underlying source of the immune activation.
• All clinical decisions must be made by a healthcare professional based on the specific shape and quantity of the protein fractions.

👉 If necessary, you can discuss the analysis results with a specialist such as a hematologist (Doctors – TAMC), oncologist (Doctors – TAMC)