Prevention Healthcare

Alcohol Blood Tests: Types, Benefits & Procedure



Alcoholism is a serious addiction that affects millions of people worldwide. Whether you're concerned about your drinking habits or those of someone close to you, understanding the different types of blood tests for alcoholism is crucial in getting an accurate diagnosis and finding the right treatment plan. In this blog post, we'll explore some of the most common blood tests used to detect alcohol abuse and help you take the first step towards recovery.

Types of Blood Tests for Alcoholism

There are several different types of blood tests for alcoholism. The most common type is the liver function test (LFT). This test measures how well the liver is functioning and can give a good indication of whether or not someone is drinking excessively. Other tests that may be done include a complete blood count, a glucose test and a lipid panel.

Ethanol Blood Test

An ethanol blood test is a type of blood test that measures the level of ethanol in a person's blood. Ethanol is the main active ingredient in alcoholic beverages. The test is used to determine if someone has been drinking alcohol and if so, how much.

Ethanol blood tests are typically requested by employers and courts as part of a drinking and driving investigation. They can also be ordered by healthcare providers to monitor people with liver disease who are abstaining from alcohol.

The test is usually performed by taking a sample of blood from a vein in the arm. The amount of ethanol in the blood is then measured using laboratory analysis.

Results of the Ethanol Blood Test

There are different ways that an ethanol blood test can be interpreted. 

  • A positive result indicates that ethanol was present in the blood at the time the sample was taken. However, it does not necessarily mean that the person was intoxicated at the time of testing.
  • A negative result means that ethanol was not present in the blood at the time the sample was taken. This could mean that the person has not been drinking alcohol or that they have metabolized all of the ethanol in their system.

The results of an ethanol blood test should be interpreted by a healthcare professional. If you have questions about your results, please speak with your doctor.

Liver Function Test

Liver function tests are important for individuals with alcoholism because liver damage is one of the most common complications of chronic alcohol use. These tests can help identify liver damage early on before symptoms develop and can also be used to monitor the progression of liver disease.

There are several different liver function tests available but the two most commonly used are the alanine aminotransferase (ALT) test and the aspartate aminotransferase (AST) test. These tests measure levels of enzymes in the blood that are released when the liver is damaged.

Elevated levels of these enzymes in the blood are a sign of liver damage. The ALT test is generally considered to be more sensitive than the AST test and is therefore the preferred test for screening for liver damage in individuals with alcoholism.

If liver damage is suspected, additional testing may be needed to confirm the diagnosis and determine the severity of the damage. This may include imaging tests such as ultrasound, MRI or a biopsy of liver tissue. Liver function tests should be repeated periodically to monitor any changes in enzyme levels and to assess the progression of liver disease.

What are the Benefits of an Alcohol Blood Test?

Some of the benefits of an alcohol blood test are:

  1. Detects Alcohol Abuse: An alcohol blood test can be used to determine if someone is abusing alcohol and if they are addicted to alcohol. This can help identify any issues that may need to be addressed by a medical professional. 
  2. Measuring Blood Alcohol Content (BAC): An alcohol blood test allows for a more accurate measurement of the amount of alcohol in someone’s system than other tests like breathalyzers or urine samples. This allows doctors to better diagnose alcohol-related illnesses such as liver disease and pancreatitis.
  3. Provides an Accurate Timeline: An alcohol blood test can reveal when someone started drinking and how much they drank in a certain period, as opposed to other tests that only provide a snapshot of the current BAC level. This information can help doctors make better decisions about treatment plans for those with alcoholism or addiction problems.
  4. Enhances Treatment Programs: When used in combination with other treatments, an alcohol blood test can provide doctors and healthcare professionals with important information about how effective their treatment programs are at reducing BAC levels and helping individuals abstain from drinking altogether.

How is the Alcohol Blood Test Conducted?

The alcohol blood test is conducted by drawing a small sample of blood from a vein in the arm, using a needle and syringe.

The sample is then sent to a laboratory for analysis. The lab will measure the amount of alcohol in the blood according to the Blood Alcohol Concentration (BAC) scale.

When Should I Get an Alcohol Blood Test?

If you are concerned with your alcohol consumption and want to know the exact amount of alcohol in your system, then an alcohol blood test may be beneficial.

A doctor may also order an alcohol blood test if they suspect that you have been drinking heavily or have consumed a dangerous amount of alcohol.


In conclusion, alcohol blood tests are an important tool in assessing and diagnosing alcohol abuse and addiction. They can help detect the level of alcohol in someone's system, as well as provide a timeline of when they started drinking and how much they have been drinking. This information can be used to create more effective treatment programs, so individuals can achieve sobriety and start living healthier lives. With the right support and guidance, individuals struggling with alcoholism can get the help they need to make positive changes. 

If you or someone you know is struggling with alcoholism, book your blood test (Ethanol test or LFT) now at Metropolis Labs. Our qualified technicians will schedule a home visit with you for sample collection. Visit our website to learn more.


Your email address will not be published. Required fields are marked *