Home collection laboratory in Trivandrum best laboratory in kazhakuttam GAMMA GT test in Trivandrum
Blood Tests Feb 06
By menhc 0 Comments

GGT (Gamma-Glutamyl Transferase) Examination

GGT (gamma-glutamyl transferase) is an enzyme that is predominantly located in the liver. Medical professionals use GGT blood tests to aid in the diagnosis of liver conditions or to rule out particular medical conditions that, when compared to other liver enzyme tests, produce atypical results.
Gamma-glutamyl transferase (GGT) is its definition.


Gamma-glutamyl transferase (GGT), alternatively referred to as gamma-glutamyl transpeptidase, is a ubiquitous enzyme with its predominant localization in the liver. An enzyme is a cellular protein that functions as a catalyst, facilitating the initiation of specific physiological processes. Your body contains thousands of enzymes, all of which perform vital functions.

What is a blood test for gamma-glutamyl transferase (GGT)?

Blood tests for gamma-glutamyl transferase (GGT) quantify the amount of GGT present in the blood. GGT may leak into the bloodstream if the liver or bile ducts are damaged; therefore, elevated GGT levels in the blood may indicate liver disease or bile duct injury. Bile ducts are channels responsible for transporting bile (an essential digestive fluid) into and out of the liver.
The administration of foreign substances, including alcohol and medications (phenobarbital, phenytoin, or warfarin), can also cause an increase in GGT levels.

GGT is commonly the initial liver enzyme to spike in concentration when any of the bile ducts in the liver become obstructed or constricted. As a consequence, this liver enzyme test is the most sensitive for detecting problems with the bile duct.

GGT levels in the blood can be elevated due to a variety of liver conditions; therefore, the test is not used in isolation to diagnose diseases. As a result, GGT blood testing is frequently ordered in conjunction with other liver function tests. It is frequently evaluated in conjunction with an alkaline phosphatase (ALP) blood test, which quantifies an additional enzyme present in the liver and bones.

Gamma-glutamyl transferase (GGT) blood tests are also referred to as GGTP and gamma-glutamyl transpeptidase.

Why is a GGT blood test necessary?

GGT blood tests are typically utilized to assist physicians in the diagnosis of liver disease and/or problems with the hepatic bile duct. Your physician may order a GGT blood test for the following reasons, among others:

  • If your blood contains an elevated amount of alkaline phosphatase (ALP),.
  • If you exhibit symptoms consistent with hepatic disease or obstructions of the bile ducts,.
  • In order to conduct an assessment for alcohol use disorder or to ensure adherence to treatment for alcohol abuse, which typically entails abstinence from alcohol or sobriety,.


Elevated levels of ALP

In the event that an alkaline phosphatase (ALP) blood test yields elevated levels, your medical practitioner may employ a GGT blood test to ascertain the underlying cause of the elevated levels. When you have biliary duct issues or certain liver diseases, both ALP and GGT levels increase, but only ALP levels increase when you have bone disease. Therefore, in the case of having normal GGT levels but elevated ALP, it is more probable that a bone disorder rather than a liver disorder is responsible for the elevated ALP.

Liver ailment

When you exhibit symptoms suggestive of potential liver problems, your healthcare provider might employ a GGT test for diagnostic purposes. Although GGT levels do not provide a definitive diagnosis, they can serve as a significant component in the diagnostic procedure. In conjunction with bilirubin, biliary, ALT, AST, and ALP, providers frequently prescribe the GGT blood test to differentiate between biliary or bile duct disorders and bone disease.


  • Among the indications and manifestations of liver disease are regurgitation and/or nausea.
  • Abdominal (tummy) discomfort.
  • Itchy extremities.
  • Jaundice is characterized by a discoloration of the eyes and skin’s whites.
  • Frustration or lethargy.
  • Appetite reduction.
  • Substance use disorder

Medical professionals can use the test to screen for alcohol use disorder because it detects elevated GGT levels in the blood in about 75% of those who have it.
Your provider can monitor for alcohol use using a GGT blood test if you are undergoing treatment for an alcohol use disorder or alcoholic hepatitis.

Test Specifics

Who conducts the GGT blood analysis?

Phlebotomists are the standard healthcare professionals responsible for conducting blood draws, including those for GGT blood tests. However, any healthcare professional with the necessary training can undertake this responsibility. Following this, the provider transmits the sample to the laboratory, where an analyzer-equipped medical laboratory scientist prepares the samples and conducts the tests.

Should I take any action in advance to prepare for a GGT blood test?

A wide variety of dietary supplements and medications can have an effect on GGT levels; therefore, it is vital that you inform your healthcare provider of all medications and supplements you are taking prior to the test. Your provider may occasionally instruct you to discontinue a medication prior to the examination. Stop taking medication only at the advice of your healthcare provider.


Alcohol can increase GGT levels, even in trace quantities; therefore, your provider may advise you to abstain from alcohol consumption for at least 24 hours prior to the test.


What can I anticipate in the course of my GGT blood test?

The following are potential side effects of a blood test or blood extract, which includes a GGT test:

While you are seated in a chair, a medical professional will examine your arms for a vein that is readily accessible. Typically, this is located in the interior arm, opposite the elbow.
After locating a vein, the area will be thoroughly cleaned and disinfected.
A thin needle will then be inserted into your vein in order to draw blood. This might feel marginally pinchy.

Following needle insertion, a minute quantity of blood will be collected in a test vial.
As soon as they have collected sufficient blood for analysis, they will withdraw the needle and apply gauze or cotton wool to the site to staunch the hemorrhage.
After having a bandage applied to the affected area, you will be released.
Typically, the duration of the entire process is under five minutes.


What can I anticipate following my GGT blood test?

Following the collection of your blood sample, a healthcare professional will send it to a laboratory for analysis. Upon the return of the test results, your healthcare provider will communicate them to you.


What hazards are associated with a GGT blood test?

Blood tests are an indispensable and widespread component of medical surveillance and testing. A minimal level of risk is associated with blood testing. A transient contusion or mild tenderness may develop at the location of the blood draw; however, this condition typically abates without further intervention.


When can I anticipate receiving the GGT blood test results?

Test results should be available to you within one to two business days, though this is not always the case.

Outcomes and follow-up

What do the GGT blood test results indicate?

Typical information included in blood test reports, including gamma-glutamyl transferase (GGT) test reports, is as follows:

  • The name of the blood test or the substance whose value was obtained.
  • The numerical value assigned to the result of a blood test.
  • The range of typical measurements for the given test.
  • Data that specifies whether the result is high or low, normal or aberrant.

What range is considered normal for a GGT blood test?

Laboratory to laboratory, the normal range for gamma-glutamyl transferase (GGT) differs. A widely used reference range among individuals is between 5 and 40 units per liter (U/L). It is crucial to consult the test result report to ascertain the specific range that your laboratory uses because reference ranges can vary between laboratories.


It is noteworthy that the average GGT levels of men and individuals assigned male at birth are slightly higher than those of women and individuals assigned female at birth. Moreover, unlike men and individuals assigned male at birth, GGT levels increase with age only among women and those assigned female at birth.


A low or normal GGT test result does not necessarily indicate the presence of alcohol consumption or liver disease.


What does a high GGT indicate exactly?

A higher-than-normal GGT level in your blood could mean that a condition or disease is harming your liver. The GGT test, on its own, is incapable of determining the precise origin of the damage. Generally, the extent of liver injury increases with the level of GGT.


The following liver conditions are capable of causing elevated GGT levels:


  • Hepatitis is an inflammation of the liver, with viral and alcoholic strains being the most prevalent.
  • Cirrhosis (hepatic fibrosis).
  • Cholestasis (bile duct obstruction in the liver).
  • Alcoholic hepatitis.
  • Disease of the non-alcoholic, obese liver.
  • Hepatic ischemia, characterized by insufficient blood supply to the liver, results in the demise of liver tissue.
  • A tumor or malignancy of the liver.

Additional conditions that may result in increased GGT levels encompass:

  • Substance use disorder.
  • Pancreatic malignancy, or pancreatitis.
  • Illness with diabetes.
  • Cardiac congestive failure.

There are specific medications that have the potential to induce liver injury.
It is crucial to understand that a high GGT test result does not automatically indicate the presence of a disease. Additional variables may influence one’s GGT levels. In analyzing your results, your healthcare provider will consider a number of factors, including the outcomes of previous blood tests and your medical history.

Why should I be concerned about an elevated GGT?

A high GGT test result does not necessarily indicate the presence of a treatment-required medical condition. Additional variables may influence your levels, such as:

Alcohol consumption: GGT levels can be elevated by even trace quantities of alcohol consumed within twenty-four hours of a GGT test. On the other hand, GGT levels are typically higher among individuals who consume substantial quantities of alcohol on a regular basis compared to those who consume no more than two to three drinks daily or occasionally consume significantly.
Cigarette consumption is notably correlated with elevated concentrations of ALP and GGT.
Specific medications include: Among the medications that have the potential to elevate GGT levels are carbamazepine, phenytoin, phenobarbital, acetaminophen, and others.

Furthermore, when evaluating your GGT result, your healthcare provider will take into account numerous facets of your health and circumstances, in addition to the aforementioned elements:

  • Your medical background.
  • The magnitude of your GGT results.
  • The outcomes of additional examinations that are frequently coupled with GGT.

Should you be exhibiting symptoms?

When must I contact my physician?

Contact your healthcare provider immediately if you perceive any indications of liver injury, including jaundice or abdominal pain.

Contact your healthcare provider immediately if you have been diagnosed with a liver condition and are exhibiting worrisome symptoms.


Communication from the Skylab Clinical Laboratory


The discovery of an abnormal test result can induce anxiety. It is important to note that a high gamma-glutamyl transferase (GGT) level does not necessarily indicate the presence of a medical condition requiring treatment. One in every twenty healthy individuals will exhibit an atypical test result. When interpreting your results, your healthcare provider will take into account various factors and inform you if additional tests are necessary to ascertain the cause of the abnormal level. Have no qualms about asking your provider for inquiries. Their purpose is to assist you.


 Skylab Diagnosis   |  GGT Test at Skylab | Skylab Clinical laboratory  | Laboratory in Pettah | Health check up Package  | Medical Laboratory Trivandrum | Best Medical Laboratory in Trivandrum | Medical AdviceLaboratory in Paruthikuzhi | Doctor at home |   Laboratory in KaramanaNursing Care | Home collection AvailableLaboratory in Sasthamangalam | Personalized Health checkup | Doctor care at home | Skylab Medical Laboratory  |  Best medical lab in Kazhakuttam | At your convenience | Medical lab in Anayara | GGT blood analysis | Home collection lab in Karamana  |  Home collection near Artech apartment Trivandrum  |   laboratory near PRS Builders  | Laboratory near PRS home | Doctor Service available |  Near Akkulam | Near kuzhivila Junction | Near Anayara |

Leave a Comment

Your email address will not be published.