What Does a High A/G Ratio Mean? (2024)

What Does a High A/G Ratio Mean? (1)

Medically Reviewed By William C. Lloyd III, MD, FACS

— Written By Kristi Van Winkle, RN

Updated on November 15, 2022

A high albumin/globulin (A/G) ratio could indicate underlying genetic disorders or cancer. Also, some conditions can elevate albumin levels or lower globulin levels, causing a high A/G ratio.The A/G ratio measurement can give your doctor an idea of your total health picture and is used to check for liver, kidney, blood, and nutritional problems. If your A/G levels are abnormal, it could indicate a serious health condition.

Read on to learn more about the A/G ratio and what conditions could cause it to be higher or lower than normal.

What Does a High A/G Ratio Mean? (2)

Your A/G ratio is the amount of albumin compared to the amount of globulin in your blood. Albumin and globulins are the two main types of proteins in your blood.

  • Albumin helps transport substances through your body, such as vitamins, hormones, and medication. It also prevents blood from seeping out of your blood vessels and binds fatty acids, keeping them in a soluble form while in the blood. The liver produces albumin.
  • Globulins are a group of different types of proteins that help move nutrients through your body and help you fight infections. The liver produces some globulins, and your immune system makes others.

A total protein test and an A/G ratio test measure your blood’s total amount of protein and the amount of albumin you have compared with globulin.

Some diseases lower the albumin level while raising one or more types of globulins. The movements and fluctuations of proteins, fluids, and other substances in your blood can paint a picture of what is happening in your body.

What is the normal range for the A/G ratio?

The albumin/globulin ratio is the albumin in your blood divided by the amount of globulins. The standard A/G ratio range is greater than 1 Trusted Source PubMed Central Highly respected database from the National Institutes of Health Go to source.

Although the “within normal limits” values for protein levels and other levels vary from laboratory to laboratory, the usual total serum protein level is about 6 to 8 grams per deciliter (g/dL).

Albumin makes up about 3.5 to 5 g/dL Trusted Source PubMed Central Highly respected database from the National Institutes of Health Go to source of the total protein level. The rest is globulins.

What causes a high A/G ratio?

If your A/G ratio is high, it could indicate an underlying genetic disorder or leukemia. Leukemia is a cancer that affects the production and function of blood cells.

A high A/G ratio can be caused by either elevated albumin levels or low globulin levels. This could indicate a few other conditions as well:

  • dehydration
  • pregnancy
  • albuminuria, or high albumin levels in urine caused by kidney disease
  • malnutrition

What causes a low A/G ratio?

If your A/G ratio is low, it could indicate:

  • certain autoimmune diseases, such as lupus
  • liver disease, such as cirrhosis
  • kidney disease

Low albumin levels or high globulin levels can cause a low A/G ratio. Other conditions that may cause such fluctuations include:

  • chronic infections like tuberculosis or hepatitis
  • pancreatitis
  • type 2 diabetes
  • certain cancers, like multiple myeloma or lung cancer

How do doctors test the A/G ratio?

Your doctor may order an A/G ratio test by itself or as part of a comprehensive metabolic panel (CMP). Because it measures proteins and other substances in your bloodstream, your doctor may order a CMP as part of regular blood work. A CMP can help diagnose kidney, liver, or nutritional problems.

A phlebotomist will draw blood from a blood vein in your hand or arm with a small needle. You may feel a pinching sensation when the phlebotomist inserts the needle, but once the draw is complete, you should not feel any more pain at the site. You may have some bruising in the area after the draw, but a blood draw usually has no other side effects.

This blood will be sent to the lab and analyzed. Your doctor will use these numbers and other factors to determine your diagnosis.

Generally, you do not need to do anything special to prepare for this test. Still, a fasting blood sample is sometimes preferred, so you may be asked not to eat for several hours before the blood draw.

Drink plenty of water before the test for a more accurate test result. Dehydration can cause your protein levels to appear higher than they are.

Before the test, make sure your doctor knows what medicines, vitamins, supplements, and any illegal drugs you take.

If your levels come back abnormal, your doctor may want a repeat A/G ratio test or CMP, or they may order other blood or urine tests for confirmation. Your doctor may also want to run some scans, such as a CT or MRI, to check your liver or kidneys to see whether your A/G ratio is abnormal.

Who might need to get their A/G ratio tested?

Your doctor may order an A/G ratio test or a CMP if they are concerned you may have certain conditions, such as:

  • protein loss from your digestive tract
  • leukemia, or other blood diseases
  • high infection risk
  • kidney disease
  • liver disease
  • malnutrition
  • diabetes
  • lupus

Talk with your doctor if you have any symptoms that indicate abnormal protein levels in your blood, which could mean liver or kidney problems. These symptoms may include:

  • jaundice, or yellowing of your eyes or skin
  • swelling in your feet, legs, or abdomen
  • unexplained weight loss
  • poor appetite
  • nausea and vomiting
  • unexplained fatigue
  • unexplained itching
  • blood in your urine
  • abdominal pain


The A/G ratio is a blood test that measures protein levels. Your doctor may order an A/G ratio as part of a complete metabolic profile or as a stand-alone blood test.

An abnormal A/G ratio can alert your doctor to the possibility of specific health concerns, such as liver disease, kidney disease, or leukemia.

But you could also have an abnormal value for other reasons, such as faulty lab techniques, equipment, or other medical conditions. In addition, many things can affect blood test results. Talk with your doctor about liver, kidney, or blood disease symptoms.

Your doctor will discuss your lab results with you and their concerns and possible treatment plans. Talk with your doctor if you have any questions about your lab results or symptoms.

What Does a High A/G Ratio Mean? (2024)


What Does a High A/G Ratio Mean? ›

A high reading may indicate issues such as severe hydration or a weakened immune system. A serum albumin and globulin (A/G) ratio test is a type of blood test. It measures the ratio of albumin to globulin, the two main proteins in your blood.

Should I be worried if my Ag ratio is high? ›

High A/G ratio: This can be a sign of disease in your liver, kidney, or intestines. It's also linked to low thyroid activity and leukemia. If your doctor feels any of your levels are too high or low, you may need to have more precise blood or urine tests.

How to reduce ag ratio? ›

Nutrition: A balanced diet rich in nutrients supports both albumin and globulin synthesis. Adequate protein intake, along with a variety of vitamins and minerals, contributes to a healthy A/G ratio. Physical Activity: Regular exercise has been linked to improved albumin synthesis and immune function.

What is the significance of the A G ratio? ›

What is it used for? A total protein and A/G ratio test is often included as part of a comprehensive metabolic panel, a test that measures proteins and other substances in the blood. It may also be used to help diagnose kidney disease, liver disease, or nutritional problems.

Should I be worried about high protein in blood? ›

No, you shouldn't worry about a test result that shows your blood protein is higher than normal. Your test result doesn't necessarily mean you have a serious illness. If your blood protein level is unusually high, your healthcare provider may order additional blood tests to get more information.

What cancers cause high protein in the blood? ›

Causes of multiple myeloma

MGUS is where there is an excess of protein molecules, called immunoglobulins, in your blood. This doesn't cause any symptoms and doesn't need treatment. Every year, around 1 in every 100 people with MGUS go on to develop multiple myeloma.

What are symptoms of high albumin levels? ›

Weakness. Jaundice, a condition that causes your skin and eyes to turn yellow. Swelling and/or pain in your abdomen (belly) Swelling in your ankles and legs.

How to treat a high A/G ratio? ›

There is no single treatment for a high or low A/G result, as this will vary depending on the underlying health condition. Treatment will also depend on any other exams or tests your doctor performs regarding your symptoms.

Can dehydration affect AG ratio? ›

A high A/G ratio may indicate kidney disease, antibody deficiencies, or severe dehydration. A low A/G ratio can also indicate kidney disease as well as liver disease, chronic infections like human immunodeficiency virus (HIV), autoimmune diseases like lupus, and certain cancers.

Why is my albumin ratio high? ›

An albumin blood test checks levels of albumin in your blood. Low albumin levels might indicate a problem with your liver, kidneys or other health conditions. High albumin levels are typically the result of dehydration or severe dehydration. The test is very quick and doesn't carry any serious risks.

How to lower albumin levels? ›

How can albuminuria be reduced?
  1. lose weight, if you are overweight.
  2. avoid foods high in sodium or salt.
  3. eat the right amounts and types of protein.

What are the side effects of high globulin levels? ›

What are the symptoms of high globulin? Elevated globulin levels, often associated with liver injury, may present with common symptoms such as jaundice (yellowing of the skin and eyes), itching, nausea, fatigue, unexpected weight loss, and swelling around the eyes, stomach, or legs.

Is 3.7 globulin level high? ›

Normal Results

Normal value ranges are: Serum globulin: 2.0 to 3.5 grams per deciliter (g/dL) or 20 to 35 grams per liter (g/L) IgM component: 75 to 300 milligrams per deciliter (mg/dL) or 750 to 3,000 milligrams per liter (mg/L) IgG component: 650 to 1,850 mg/dL or 6.5 to 18.50 g/L.

Is a 2.4 A/G ratio bad? ›

A test result with a ratio less than 1 or more than 2.5 is considered bad. A bad ratio means the presence of an ongoing disease or pathology in the body. What does the AG ratio indicate? The AG ratio indicates the concentration of albumin and globulins in the blood serum of an individual.

Will drinking water reduce protein in the blood? ›

No. Although drinking more water will make you pee more, which means each time you pee it will contain less protein, it will not stop your kidneys from leaking out protein.

What are the symptoms of too much protein in your body? ›

Symptoms and Side Effects of Excessive Protein Intake
  • Weight Gain. If you eat more protein than you burn off (without working out, for example), you might gain weight. ...
  • Fruity Breath. ...
  • Constipation. ...
  • Diarrhea. ...
  • Dehydration. ...
  • Kidney Damage. ...
  • Kidney Stones. ...
  • A Higher Chance of Getting Cancer.
Jun 11, 2024

What infections cause high protein in blood? ›

Possible causes of high blood protein include:
  • Amyloidosis (buildup of abnormal proteins in your organs)
  • Dehydration (when the body doesn't have enough water and other fluids to work as it should)
  • Hepatitis B.
  • Hepatitis C.
  • Monoclonal gammopathy of undetermined significance (MGUS)
  • Multiple myeloma.

What infection causes high globulin? ›

Therefore, your healthcare provider will interpret your result in context of other test results and any symptoms you may have. Raised levels of globulin proteins may indicate [1, 2]: Acute infection — such as pneumonia or hepatitis. Chronic inflammatory disease — such as rheumatoid arthritis or lupus.

Is the 3.8 globulin level high? ›

Normal value ranges are: Serum globulin: 2.0 to 3.5 grams per deciliter (g/dL) or 20 to 35 grams per liter (g/L)


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