A blood test should be on the list of diagnostic tests.To get the most accurate results, it is necessary to exclude the influence of a number of third-party factors.In particular, we will talk about alcoholic beverages.The patient is always asked not to drink alcohol during the previous 2 days before the tests.
But does alcohol actually affect blood tests?Of course yes, and here's how:
- reduces the number of red blood cells and hemoglobin;
- reduces urea volume;
- reduces lactate and glucose levels;
- increases the level of triacylglycerols.
Ethanol makes the blood viscous and promotes the formation of clots.Excessive levels of hemoglobin and red blood cells can be mistaken for symptoms of megaloblastic anemia.
Alcohol has the greatest effect on blood tests of the biochemical spectrum.Due to low uric acid, false results can be drawn, as this is characteristic of poor blood circulation.A high concentration of triacylglycerols is characteristic of ischemic heart disease, as well as hepatitis of viral etiology.In order to avoid such mistakes, you should inform your doctor in advance about the alcohol you take (if it happens).
In addition to distorting blood parameters, ethanol sometimes damages laboratory equipment.Thus, when interacting with reagents, the latter stops the glucose reaction.Even if there is some ethyl alcohol in the blood, the enzyme tests will also be false.
How does alcohol affect your earnings?
In addition to alcohol, smoking and some harmful foods have a negative effect on the results of blood tests.But the last factor is the most important, it should be excluded.Tests after alcohol are pointless because they are not accurate.
General analysis
How blood parameters are distorted under the influence of ethanol:
- cholesterol level increases;
- red blood cells are destroyed;
- hemoglobin decreases.
If you drink at least a little alcohol before taking a complete blood count, it is guaranteed that the number of red blood cells will decrease - these are red cells that contain hemoglobin.They participate in the circulation of oxygen to all internal organs and tissues, and then back to the lungs.
And ethanol has a destructive effect on the membrane of red blood cells, as a result of which their motor activity is impaired - they stick together because they stop repelling each other.As a result, their number decreases and, as a result, the level of hemoglobin decreases.Against this background, thrombosis occurs and microcirculation slows down.
Under the influence of alcohol, blood thickens and is filled with flocculent formations, making it difficult for it to pass through capillaries and vascular spaces.This not only hinders accurate research, but also poses a threat to human health.If alcohol was consumed 10-12 hours before the tests, then the only thing that will show is the intoxication of the body with ethanol.
Biochemical analysis
Most importantly, ethanol distorts the results of biochemical blood tests designed to give a more detailed clinical picture.With its help, they learn which components are missing and which are too many and need to be reduced.
How alcohol affects such tests:
- reduces glucose levels;
- increases uric acid;
- disrupts cellular oxygen supply;
- worsens the general condition of a person.
A low blood glucose level can indicate the development of diabetes mellitus, and an excessive amount of urea is the result of alcohol consumption.But the last indicator can be a sign of serious circulatory disorders, as well as a hemorrhagic stroke or pathology of the left ventricle.Excess urea is also one of the symptoms of gout or chronic arthritis.Therefore, it is very important not to drink alcohol before the tests.
Failure to follow the preparation rules before taking a blood test, that is, the use of any product containing alcohol, often gives inaccurate results.Too much triacylglycerol may be present.These neutral fatty compounds are important for identifying many pathologies in the body: ischemia, atherosclerosis, viral hepatitis, blood clots in cerebral vessels.
Even during laboratory examinations, doctors do not use products containing alcohol.Although with their help it is possible to detect the infection more effectively.However, this option is ruled out since a small amount of ethanol significantly distorts such data.
It is true that in practice, patients often hide from doctors that they used to drink alcohol.Such behavior leads to unreliable diagnosis, as a result of which serious pathologies may not be visible and may miss the moment.In addition, the person who comes to donate blood will feel bad.Possible:
- fainting;
- dizziness;
- migraine;
- nausea and vomiting.
By donating blood while awake, the losses are negligible, so the person does not feel any deterioration in his condition.But after drinking alcohol, metabolic processes and brain circulation are disturbed.Then the patient experiences a lack of oxygen to the brain, which causes him to lose consciousness and become dizzy.Even after donating blood, a person will continue to experience headaches for a long time.
In addition, during a hangover, olfactory reflexes are particularly sensitive to various specific odors.Against the background of indigestion, even the smell of bleach or alcohol in the doctor's office can cause a gag reflex.
Taking blood for sugar
If metabolic disorders are suspected, a blood sugar test is prescribed.Collection is done by finger prick.And the alcohol consumed the day before thickens the blood, making it difficult to withdraw.
Ethanol is known to have harmful effects on liver function.Even the reagents and laboratory equipment used in the work react to it and do not give correct results.Thus, when examining blood containing alcohol breakdown products, contradictory indicators are possible: a decrease or increase in glucose values.
One gram of ethyl alcohol can add 6-7 kcal.With the help of liver enzymes, they are converted into sugar.Therefore, its level rises sharply.But a decrease in glucose is also possible.In just a few hours a day, its content is stabilized by carbohydrates from the digestive tract.The rest of the time, the liver actively synthesizes glucose using strategic reserves.But alcohol stops this process and causes the glucose level to drop.
Just 2 days after drinking alcohol, glucose starts to be produced as before.
This indicator is also evidence of possible diabetes mellitus, but the doctor will think that this is the result of the effect of ethanol.As a result, you may lose time by not starting treatment on time.
When can you drink?
Any alcoholic beverages, even beer, affect the results of almost all types of tests.It is especially forbidden to drink alcohol before the tests prescribed on the eve of the operation.In some cases, small doses of alcohol are not prohibited.The doctor tells the patient how much is possible in advance.
In general, it is forbidden to drink strong drinks 1.5-2 days before taking blood from a vein.This period is enough to stop any processes that have a significant impact on the body.
When conducting ELISA tests (for HIV, hepatitis and other sexually transmitted infections), you should refrain from alcohol for at least 3 days, in individual cases - up to 7.Otherwise, the accuracy of the results is not guaranteed.If the doctor finds that the patient does not follow this rule, the procedure is postponed until the moment when the body is completely cleansed of toxins.
Drinking before the alcohol test and ignoring medical recommendations significantly complicates the diagnosis.The risk of getting wrong results increases.In addition to alcohol-containing products, you should exclude fatty foods from your diet, as well as smoke less and be nervous.Under their influence, the level of hormones in the blood jumps.They make it difficult to detect viruses.Incorrect information can confuse the doctor, and he will mistakenly diagnose any serious pathology (for example, tumor, hepatitis).
Before testing the blood of drivers to determine the degree of intoxication, there is no ban on the use of alcoholic beverages.Such diagnosis is carried out without warning.In all other cases, it is allowed to drink only clean water, and then in small quantities.
Thus, ethanol greatly affects the accuracy of blood test results, and they will differ significantly from normal ones.This is influenced by the amount of ethanol decomposition products, the type of procedure and the correctness of its implementation.Misdiagnosis leads to misdiagnosis and ultimately unnecessary or delayed treatment.