The following represents some of the key positives and negatives regarding urine alcohol testing. Urine Alcohol Testing Pros
They have a high assurance of reliable results.
They are relatively inexpensive.
They provide the most flexibility in testing different drugs, including alcohol and nicotine.
They are the most likely of all drug-testing methods to withstand legal challenge. Urine Alcohol Testing Cons
The specimen can be adulterated, substituted, or diluted.
They have a limited window of detection (typically 1 to 5 days).
They are considered as invasive or embarrassing form of alcohol testing.
They present a biological hazard when the specimens are handled and shipped to the lab.
They indicate the presence of alcohol in a person's system, but it takes up to 2 hours for the alcohol to show up in urine. A positive urine test does not necessarily mean the person was under the influence of alcohol at the time of the test. Rather, it detects and measures the use of alcohol within the previous day or so and with some special testing methods, such as EtG urine alcohol tests, up to 80 hours.
Taken from: Alcohol Testing | Alcohol Tests | Testing for Alcohol | Alcohol Test
The EtG Urine Alcohol Test
With some urine alcohol tests, alcohol can be detected up to around 48 hours after a person has ingested alcohol.
With the EtG Urine Alcohol Test, however the presence of EtG in the urine demonstrates that ethanol alcohol was ingested within the past 3 or 4 days, or roughly 80 hours after the ethanol alcohol has been metabolized by the body.
As a result, it can be determined that a urine alcohol test employing EtG is a more accurate indicator of the recent consumption of alcohol as opposed to simply measuring for the existence of ethanol alcohol (as is done many other urine alcohol tests).
Let's use one of the above examples to further illustrate the ramifications of the EtG Urine Alcohol Test. As stated above, a person with a blood alcohol concentration of .15 will have no measurable alcohol in his or her bloodstream ten hours after the last drink.
With the EtG Urine Alcohol Test, however, the presence of EtG in the urine reveals that ethanol alcohol was consumed within the past 80 hours or so which could mean many hours after the ethanol alcohol has been metabolized by the body.