Carbohydrate-deficient Transferrin (CDT) Blood Test

What is the purpose of this test?

The Carbohydrate-Deficient Transferrin (CDT) Blood Test is a specialized blood test used to determine if someone has been consuming alcohol heavily over an extended period. CDT is a type of protein that carries iron in the body and is synthesized by the liver. When someone drinks heavily, their CDT levels tend to increase over time as the liver tries to process the excess alcohol. The CDT test is a highly specific test that can detect even small amounts of alcohol consumption. It is often used in conjunction with other tests to help diagnose alcoholism or to monitor someone's progress in recovery from alcohol addiction. The test is usually ordered by a doctor if they suspect that someone has been drinking heavily over a prolonged period. 

When the CDT test is performed, a sample of the patient's blood is taken and sent to a laboratory for analysis. The laboratory then measures the CDT levels in the blood and compares them to normal levels. If the CDT levels are higher than normal, it is an indication that the patient has been drinking heavily over the past few weeks to months. It is important to note that the CDT test is not foolproof and can sometimes give false positive results. Other factors, such as liver disease or certain medications, can also cause CDT levels to increase. Therefore, doctors usually take a comprehensive approach to diagnose alcoholism, which may include other tests and assessments.

Who would benefit from this test?

The Carbohydrate-Deficient Transferrin (CDT) Blood Test would be beneficial to:

• Individuals with a history of heavy alcohol consumption
• Healthcare professionals monitoring patients for alcoholism or alcohol abuse
• Employers conducting drug and alcohol testing for their employees
• Researchers studying the effects of alcohol on the body and brain.

When should I order a Carbohydrate-Deficient Transferrin (CDT) Blood Test?

A CDT blood test may be recommended if you exhibit the following symptoms:

• Chronic alcohol abuse
• Jaundice or yellowing of the skin and eyes
• Abdominal pain and swelling
• Fatigue or weakness
• Loss of appetite
• Nausea and vomiting
• Unexplained weight loss
• Swelling in the legs or feet
• Dark urine and pale-colored stools

It's important to note that these symptoms can also be indicative of other health conditions, so it's best to consult with a healthcare professional for an accurate diagnosis.