What is the longest EtG can be detected?

EtG can be detected in the urine for as long as 5 or more days after the consumption of alcohol, but more typically becomes undetectable within 48 to 72 hours (Wurst et al., 2002). EtS is another non-oxidative direct metabolite of ethanol that results from sulfate conjugation.

How many hours does it take to pass EtG?

The look-back period for the detection of EtG in urine is about 80 hours. There could be a variance in either direction, but generally, we consider 80 hours to be an accurate period. This means that if someone consumed alcohol in the past three days and eight hours, the urine EtG alcohol test would identify it.

Does EtG degrade over time?

Degradation of EtG may occur over time if a urine sample is not stored properly. EtG is subject to bacterial degradation if the urine specimen is stored at room temperature for too long after collection. When degradation occurs, the amount of EtG in the urine decreases over time.

What is a high level of EtG?

A “high” positive (ie, >1000 ng/mL) may indicate: -Heavy drinking on the same day or previously (ie, previous day or 2). A “low” positive (ie, 500-1000 ng/mL) may indicate: -Previous heavy drinking (ie, previous 1 3 days).

Can EtG be detected after 120 hours?

Sensitivity and Specificity Overall, the EtG immunoassay was able to correctly identify self-reported drinking from 24 (AUC=0.90, 95% CI: 0.88, 0.92) to 120 hours (AUC=0.88, 95% CI: 0.87, 0.90).

How much alcohol does it take to test positive for EtG?

An EtG-I cutoff of 100 ng/mL is most likely to detect heavy drinking for up to five days and any drinking during the previous two days. Cutoffs of ≥ 500 ng/mL are likely to only detect heavy drinking during the previous day.

Can you pass an EtG in 12 hours?

Another study found that EtG tests are always positive at the 100 ng/ml and 200 ng/ml cut offs within 12 hours. They become less effective at 24 hours with light alcohol use and 48 hours with heavier alcohol use.

How far back can EtG detect alcohol?

How far back in time does EtG test for alcohol? EtG has become a reliable indicator of alcohol consumption as the metabolite can be found in urine for up to five days after drinking.

What is a normal EtG level?

Interpreting An EtG Test Levels higher than 1,000ng/mL of EtG in the urine is considered a “high” positive, and usually is indicative of heavy drinking within the previous day or same day, or even light drinking the day of the test. “Low” positive tests have levels of EtG between 500 to 1,000ng/mL.

What is the cut off level for EtG?

The cutoff level for EtG confirmation may be 100 ng/mL, 250 ng/mL, 500 ng/mL or higher; the EtS confirmation cut-off level is 75- 100 ng/mL.

Can I pass an EtG test in 72 hours?

Moderate drinking (defined as approximately 4-5 standard drinks) may be detected up to 48 hours after drinking. Neither metabolite is easily detected much after 48 hours, regardless of the dose of alcohol, with the exception of a “heavy” amount of ethanol consumed.

What is the half life of EtG in urine?

EtG elimination occurred with a median half-life of 2.2 h (range 1.7-3.1 h), and the renal clearance was 8.32 L/h (median, range 5.25-20.86). The concentrations of EtG were always much higher in urine than in blood.