Total Protein with Albumin/GLOBulin Separation (Serum)

Measuring the protein in your blood gives your care team an important window into your overall health. Proteins help your body fight infection, build and repair tissue, and keep fluid from leaking out of your blood vessels. When your protein level falls outside the normal range, it can point to conditions affecting the liver, kidneys, digestive system, or immune system, sometimes before you notice any symptoms. That is one reason this test is often included in a routine checkup.

Total protein reflects the combined weight of albumin and globulin proteins in your blood. Albumin, produced by your liver, helps maintain fluid balance and supports nutrient transport. Globulins, which include antibodies and other immune proteins, play a role in immune function and blood clotting. Abnormal levels may indicate conditions like liver disease, kidney dysfunction, or malnutrition.

This test is usually performed on a small sample of blood drawn from a vein in your arm, typically on the inside of your elbow or the back of your hand. In the laboratory, the sample is analyzed to measure total protein, which is made up of two main groups called albumin and globulin. Some testing methods also separate these groups so your doctor can see the exact balance between them. The analysis itself is quick, and results are often ready within a day or two.

A small blood sample is drawn and analyzed to separate and measure the different protein components. The results help doctors evaluate protein synthesis, breakdown, or loss in your body.

Several health conditions can shift your protein levels. Low results may be linked to liver disease, kidney disorders, malnutrition, celiac disease, or inflammatory bowel disease. Higher results can occur with chronic infections, autoimmune conditions such as lupus, multiple myeloma, or simple dehydration. Certain medications, pregnancy, and recent surgery may also influence your numbers, which is why your doctor always interprets results together with your symptoms, medical history, and other test findings.

Low total protein or albumin might suggest liver disease, malnutrition, or kidney problems. High globulin levels could indicate chronic infections, autoimmune disorders, or certain cancers. These findings often prompt further testing or medical evaluation.

Very little preparation is needed for this test. Your doctor may ask you to avoid eating or drinking anything except water for several hours beforehand, especially if the test is being done along with other blood work. Tell your care team about all prescription medicines, over-the-counter drugs, and supplements you take, since some can affect the results. Wear a shirt with loose sleeves so the person drawing your blood can reach your arm easily, and stay well hydrated unless you are told otherwise.

No special preparation is needed, but avoid heavy meals 2 hours before your blood draw. Stay hydrated unless advised otherwise by your healthcare provider.