Your Health Check: Interpreting Alcohol Levels in Test Results - Family Medicine

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Hello, doctor: I would like to ask about the health examination report.
The ethanol level is 49 mg/dL, with a reference value of 50, and hemolysis is 3+ (instrument: Alcohol).
Can this report be interpreted as indicating the presence of alcohol, or is it inconclusive? Thank you.

Zhang Xiaojun, 20~29 year old female. Ask Date: 2013/12/18

Dr. Gao Qingyun reply Family Medicine


Dear Xiao Jun,
Hello.
In medical practice, it is advisable to attach the complete report when interpreting laboratory results.
If there is a hemolyzed specimen, efforts should be made to resend the specimen whenever possible, or to discuss with laboratory professionals if necessary.
Thank you.
Wishing you safety and health,
Department of Family Medicine, Taoyuan General Hospital, Ministry of Health and Welfare
Gao Qingyun

Reply Date: 2013/12/18

More Info


When interpreting your health check report regarding ethanol levels, it is essential to consider several factors, including the reported ethanol concentration, reference values, and the presence of hemolysis in the sample.

In your case, the ethanol level is reported as 49 mg/dL, which is just below the reference value of 50 mg/dL. This slight difference raises questions about whether this result indicates the presence of alcohol in your system. Generally, a reading below the reference range may suggest that there is no significant alcohol present. However, it is crucial to note that the result is very close to the threshold, and the presence of hemolysis (indicated by the 3+ hemolysis result) can complicate the interpretation.

Hemolysis refers to the breakdown of red blood cells, which can release substances into the plasma that may interfere with laboratory tests. In the context of an alcohol test, hemolysis can potentially lead to false readings or inaccuracies. Therefore, while the ethanol level is marginally below the reference value, the hemolysis in your sample could mean that the test result is not entirely reliable.

To clarify your situation, it is advisable to consult with your healthcare provider. They may recommend repeating the test with a new sample to ensure accuracy, especially if there are concerns about alcohol consumption or if the test is part of a broader evaluation of liver function or substance use.

In general, alcohol testing can be influenced by various factors, including recent alcohol consumption, the timing of the test in relation to drinking, and individual metabolic differences. For example, alcohol is metabolized at a rate of approximately 0.015 grams per deciliter per hour, and factors such as body weight, age, and overall health can affect how quickly alcohol is processed in the body.

If you have consumed alcohol before the test, even a small amount could potentially affect the results. However, if you have not consumed alcohol, the low reading combined with hemolysis may indicate that there is no significant alcohol present in your system.

In conclusion, while your test result of 49 mg/dL is slightly below the reference value, the presence of hemolysis complicates the interpretation. It is best to discuss these results with your healthcare provider, who can provide further guidance and possibly recommend retesting to ensure accurate results. Understanding the implications of alcohol levels in your health check is crucial, as it can impact your overall health assessment and any necessary follow-up actions.

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