Perhaps, but as we don't know the circumstances as to why OP needs an etg test, or if OP needed to abstain from alcohol
The con of the etg test is that it doesn't discern etg from beer/wine/spirit consumption, or etg from Nyquil/vanilla extract/ocd amounts of hand sanitizer usage. What my puppy tells agents eager to revocate swimmers on a single etg is that one test wouldn't hold up in court and any defense attorney that has a pulse should be able to shred one etg positive. So, one etg positive could be explained quite honestly as incidental exposure.
Just a word of caution, the literature is pretty specific with confirmation levels of etg and incidental exposure (e.g. ocd hand sanitizer usage would have a max of 750 ng/mL of etg). So while someone dosing themselves with 2 ounces of 10% alcohol Nyquil, uses hand sanitizers 15 times a day and uses a few other products that contain alcohol may have a 950 ng/mL confirmation level. Whereas someone that drank 8 beers a couple days ago would have a 350,000 ng/mL confirmation level.
It would be a hard sell to say that someone drank 2 oz of Nyquil and have a 95,000 ng/mL etg level as opposed to the more probable 950 ng/mL level from that exposure. My puppy would say not to lie about dosage levels, as a confirmation could prove that the lie wasn't the case. If it comes back negative, there is no need to say anything.