Assertion : Dope test is used to estimate the level of blood alcohol by analysing the breath of persons drinking alcohol.
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What Is a Blood Alcohol Test?
When you think of a blood alcohol test, you might picture a Breathalyzer at a traffic stop. But you might need one for other reasons, too. And there’s more than one type.
To check your blood for alcohol, your doctor uses a needle to take blood from your arm and measure the level of alcohol. The other tests you might get for alcohol, like a breath or urine test, don’t use blood samples.
Each of these tests has the same goal: to check how much alcohol is in your body. Usually, you get a result called blood alcohol concentration (BAC). It’s a small number, like 0.05, and it tells you the percent of alcohol in your blood.
The higher your BAC, the more alcohol is in your system. And that affects your judgment, control, and lots of other things.
When Would I Get Tested?
You might need one for legal or medical reasons.
A legal reason can be a police officer’s suspicion that you’re driving drunk or drinking under age. It’s also common after a car crash to see if alcohol played a role. Usually, you’d take a breath alcohol test on the spot. If you refuse, you may be required to get a blood alcohol test.
2018-10-19T11:24:28+00:00
Blood alcohol concentration (BAC) is a standard measurement used to describe how drunk a person may be. Different percentages of alcohol in the blood lead to different levels of mental and physical changes and risks. In the United States, a BAC of 0.08% is the legal limit, meaning one can no longer safely drive after this point. The percent is related to how many parts alcohol are in the blood; a BAC of 0.1% represents one part alcohol per 1,000 parts blood.
As the liver metabolizes about one standard drink per hour, one to two drinks raises the BAC a small amount: ranging from 0.01% to 0.05%, depending on individual factors like weight, gender, age, and potential prescription medications. Two to three drinks raise BAC to between 0.06% and 0.1%. Memory, judgment, reaction time, perception, and fine motor skills are affected at this point. Higher BACs lead to inappropriate social behaviors, loss of balance, slurred speech, memory loss, blackouts, low body temperature, trouble breathing, vomiting, and even sudden death.
Because of the dangers from high levels of alcohol in the blood, there are several scientific measurements that can measure BAC. The entire body is affected by alcohol, especially in large quantities, so there are several tests that are applied in different situations to determine how intoxicated someone may be.
Tests for Blood Alcohol Concentration
Romberg balance test: Often given to determine whether one is intoxicated or not, the Romberg balance test is based on the concept that three functions are necessary to remain standing still: vision, proprioception (knowing where limbs are in space), and vestibular function (equilibrium as provided by the inner ear). Drinking alcohol changes how the inner ear senses the body’s orientation in space and changes how the brain processes visual images. Clues listed by the Romberg test that may indicate drunkenness include:
Amount and direction of body swaying
Eyelid or body tremors
Estimation of time passing
Muscle tone
Sounds or phrases during the test, including whether speech is slurred
Ability to follow directions and how quickly
When you think of a blood alcohol test, you might picture a Breathalyzer at a traffic stop. But you might need one for other reasons, too. And there’s more than one type.
To check your blood for alcohol, your doctor uses a needle to take blood from your arm and measure the level of alcohol. The other tests you might get for alcohol, like a breath or urine test, don’t use blood samples.
Each of these tests has the same goal: to check how much alcohol is in your body. Usually, you get a result called blood alcohol concentration (BAC). It’s a small number, like 0.05, and it tells you the percent of alcohol in your blood.
The higher your BAC, the more alcohol is in your system. And that affects your judgment, control, and lots of other things.
When Would I Get Tested?
You might need one for legal or medical reasons.
A legal reason can be a police officer’s suspicion that you’re driving drunk or drinking under age. It’s also common after a car crash to see if alcohol played a role. Usually, you’d take a breath alcohol test on the spot. If you refuse, you may be required to get a blood alcohol test.
2018-10-19T11:24:28+00:00
Blood alcohol concentration (BAC) is a standard measurement used to describe how drunk a person may be. Different percentages of alcohol in the blood lead to different levels of mental and physical changes and risks. In the United States, a BAC of 0.08% is the legal limit, meaning one can no longer safely drive after this point. The percent is related to how many parts alcohol are in the blood; a BAC of 0.1% represents one part alcohol per 1,000 parts blood.
As the liver metabolizes about one standard drink per hour, one to two drinks raises the BAC a small amount: ranging from 0.01% to 0.05%, depending on individual factors like weight, gender, age, and potential prescription medications. Two to three drinks raise BAC to between 0.06% and 0.1%. Memory, judgment, reaction time, perception, and fine motor skills are affected at this point. Higher BACs lead to inappropriate social behaviors, loss of balance, slurred speech, memory loss, blackouts, low body temperature, trouble breathing, vomiting, and even sudden death.
Because of the dangers from high levels of alcohol in the blood, there are several scientific measurements that can measure BAC. The entire body is affected by alcohol, especially in large quantities, so there are several tests that are applied in different situations to determine how intoxicated someone may be.
Tests for Blood Alcohol Concentration
Romberg balance test: Often given to determine whether one is intoxicated or not, the Romberg balance test is based on the concept that three functions are necessary to remain standing still: vision, proprioception (knowing where limbs are in space), and vestibular function (equilibrium as provided by the inner ear). Drinking alcohol changes how the inner ear senses the body’s orientation in space and changes how the brain processes visual images. Clues listed by the Romberg test that may indicate drunkenness include:
Amount and direction of body swaying
Eyelid or body tremors
Estimation of time passing
Muscle tone
Sounds or phrases during the test, including whether speech is slurred
Ability to follow directions and how quickly
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