Three years ago I used a breathalyzer to determine if it was safe to drive home after sharing a bottle of wine for a dinner out. The post remains the most popular on my web site to this date, which indicates that people continue to seek the same information.

And the answer is still the same: it depends….

First, how well you metabolize alcohol depends on your size and amount of fat. Everyone is different and you need to determine your alcohol tolerance. Using a breathalyzer helps, but even that is no guarantee it is as calibrated as the unit used by the police.

My experiment showed that I had a .44 blood alcohol content — well under my home state’s chargeable limits — after consuming slightly more than a half bottle of wine over a hearty dinner. I took the test about 30 minutes after my last sip.

Second, every state has a variety of charges: drive while intoxicated, driving under the influence and impaired. Some even have zero tolerance, so any alcohol found in the blood will result in a charge. In most of these cases, the police have pulled you over for another reason (accident, missing tail light, rolling through a stop sign, etc.).

I’m not condoning driving and drinking. But neither am I supporting temperance. You can have wine with dinner if you know when to stop drinking.

My wife and I like to order a bottle of wine when we dine out. Spread over a couple of hours of leisurely dining, I assume the wine has not rendered me incapable of getting us home. But if I were pulled over, would the police think differently?

Chances are you have wondered the same thing.

I laid the matter to rest recently by using a portable breathalyzer to measure my alcohol content in a simulated dining experience. The AlcoMate Revo made by AK Global Tech is a highly sophisticated breathalyzer that assures accuracy over multiple uses and even has a spare sensor module to quickly substitute as the other one is being recalibrated. Like other breathalyzers, you simply blow into a disposable port until told to stop.

Here was the set-up: I drank 14 ounces of wine -- slightly more than half of a 750ml bottle -- over 90 minutes and with a hearty meal.

Here was AlcoMate's result: .044 percent alcohol content, well under the .08 level all states use to charge you with drunk driving, measured 30 minutes after I stopped drinking and eating..

Here are the "buts": Some states have lesser charges that can be brought with lower levels. For instance, in Maryland a breathalyzer reading of .07 to .08 could draw a driving while impaired charge with a heavy penalty. Furthermore, a reading of .05 to .07 can be used against you if you are charged with another infraction, such as reckless driving. My home state of Florida has no such additional charges.

But, my .044 reading was safely under even the most strict drunk driving levels.

Secondly, everyone reacts differently to alcohol consumption. I am 6-ft. 4-in. tall and weigh 200 pounds. A woman and a person with more fat will not metabolize alcohol as quickly as a thin male. And, a "drink" is not always equal. A 4-oz. glass of wine is not the same as a margarita with a double shot of tequila, so watch those guidelines that say it's safe to have one drink per hour.

The AlcoMate costs $225 and can be purchased on line. It's far less than your legal fees if you are charged with drunk driving.