How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Family Physician Your Own Question
Family Physician
Family Physician, Board Certified MRO
Category: Drug Testing
Satisfied Customers: 12816
Experience:  Medical Review Officer - Physician Trained and certified in drug test interpretation
1304720
Type Your Drug Testing Question Here...
Family Physician is online now
A new question is answered every 9 seconds

how long does alcohol stay in the urine

Resolved Question:

how long does alcohol stay in the urine
Submitted: 4 years ago.
Category: Drug Testing
Expert:  Family Physician replied 4 years ago.

Alcohol is metabolized at the rate of approximately 1 drink (1 beer, 1 shot or 1 glass of wine) per hour. Even if you use a more conservative time of 1 1/2 hour per drink, the detection period for 2 drinks would be about 3 hours, 6 drinks in about 9 hours etc.

Another test; EtG identifies a biomarker for recent alcohol use (not the alcohol itself). While many sites suggest detection up to 80 hours, this long of a detection period is unlikely except with very heavy use.

A recent study looked at the sensitivity of commercially available EtG testing (again using the lowest sensitivity) and found that all specimens were negative within 26 hours.
http://www.ncbi.nlm.nih.gov/pubmed/17376784

I believe that there are several reasons for so many sites referencing the "80 hour" range including labs trying to convince those ordering the test that they are more effective than science might suggest, and those web sites that are promoting useless products that claim to "beat" drug tests can convince customers that their product actually helped them pass the test.

Family Physician and other Drug Testing Specialists are ready to help you