The study of biological materials and in particular blood is a common procedure prescribed for diagnosis or in the process of treatment.
To avoid obtaining incorrect results, some rules must be followed before the tests.One of them concerns the use of tobacco products.
Is it possible to smoke before taking blood test?
For those who use tobacco products on an ongoing basis, the question of whether it is possible to smoke before blood donation is very relevant.After all, it happens that a person and a couple of hours cannot spend without another puff.
Once in the body through the lungs, nicotine is almost immediately absorbed into the blood, significantly changing its structure.Moreover, it doesn’t matter which cigarette cigarettes were used by the smoker.As a result, the analysis will show data that can be inadvertently interpreted by a doctor and can lead to a wrong diagnosis.
This state of affairs is fraught with useless treatment, which means a protracted disease, and in the worst case, developing complications.
Attention!Doctors prohibit smoking an hour before the analysis, and in some cases (which the specialist will warn in advance), there may be more abstinence.
As for whether it is possible to smoke after blood donation, then the restrictions are less strict, but they are still.Since immediately after the blood fence, a person is weakened, and the flow of nicotine will increase the load on the body, this can lead to undesirable consequences.Immediately after blood donation, it is advisable to calmly sit for several minutes, then eat something, drink and only after that remember the cigarettes.
Effect on blood indicators
An explanation of why it is impossible to smoke before donating blood is very simple - nicotine is able to influence most of the biomaterial indicators, in particular:
- change the properties of platelets;
- significantly increase cholesterol;
- influence the ratio of hormones;
- change hemoglobin indicators;
- increase the level of lymphocytes;
- Increase the content of catecholamines and cortisol.
In addition, a sharp emission of catecholamines leads to spasm and as a result of the difficulty of blood flow.Blood becomes thicker, the process of biomaterial fiction is complicated.
Nicotine negatively affects the process of providing internal organs with oxygen.The oxygen starvation that arose as a result leads to a deterioration in well -being.
General blood test
Smoking affects a general blood test, as a result of which it is possible to identify the development of inflammation or infection.As a result of the reaction between hemoglobin and carbon monoxide, in the high concentration of cigarette smoke, carboxyghemoglobin is formed.
This substance, unlike protein, does not transport oxygen to tissues and organs.The hypoxia that arises provokes excessive production of lymphocytes, and their increased content in the blood can be regarded as the presence of an inflammatory process in the body.Thus, the results of a general blood test, donated shortly after smoking, will be incorrect.
Attention!The maximum concentration of nicotine in the blood is achieved about half an hour after smoking, so before you donate blood from the finger, you should not smoke for at least 1-1.5 hours, but it is better to increase this period.
Biochemical analysis
A biochemical blood test allows you to identify many internal pathologies, including the presence of cancer and diseases of the cardiovascular system.That is why it is so important to carefully prepare for the study, observing all the rules, including regarding smoking before blood donation.
Venous blood is the most informative material, thanks to the study of which you can get a fairly complete idea of the state of the body.But for this, the results of the analysis must correspond to the real state of affairs.
In the process of using tobacco products in the blood, not only the redistribution of certain substances occurs.The smokers change lipid-carbohydrate metabolism, which also affects blood indicators.Therefore, specialists voiced the ban before leaving blood from the vein quite categorically.The abstinence should be several hours.
Analysis for sugar
Sugar analysis helps to detect such a serious disease as diabetes.The answer to the question, you can smoke before donating blood for sugar, will also be negative.Scientists have proved that nicotine increases blood glucose.This fact, as well as a change in other indicators, can cause an incorrect interpretation of the results.
If the patient has an already increased sugar level, then even one smoked cigarette can significantly worsen the situation.
Blood on HIV
When donating blood for HIV infection, it is forbidden to smoke.You need to abandon cigarettes 2-3 hours before the procedure.Nicotine and other substances contained in tobacco smoke inhibit the immune system.Because of this, the result of HIV analysis may be inaccurate and not display the real condition of the patient.
Hormones research
The hormonal background is a very important indicator that affects the condition and performance of the whole organism.Nicotine affects the adrenal glands, which leads to increased synthesis of hormones, in particular cortisol.In addition, the smoking man decreases the production of testosterone, and in women estrogen and prolactin.
Smoking before analyzing hormones can negatively affect the functioning of the thyroid gland.So it is desirable to abandon the cigarette a few hours before the leap of blood.
How does the donation affects?
Nicotine causes a change in blood structure at the cell level, and also affects plasma.A person who decided to donate blood to help others undergo a mandatory examination.If the results are satisfactory, you can become a donor.
Since blood donated can be used in a wide variety of situations in which the issues of life and death are sometimes solved, its quality should be perfect.Therefore, by instructing the future donor, the doctor talks in detail about all the available prohibitions and restrictions.Including it is announced at what time before the procedure it is necessary to refuse alcohol (2-3 days) and cigarettes (at least 1 hour).
In the blood of an avid smoker, nicotine and other harmful substances received in the process of smoking are constantly present, since a person smokes with such a frequency that blood simply does not have time to cleanse.Such people may not be allowed to be donated at the selection stage.
How to prepare a smoker for a blood test?
Before donating blood for analysis, you can not only smoke.In order for the results of the study to be absolutely reliable and give a real idea of the patient’s health status, some preparation rules must be adhered to.They are as follows:
- Blood for the study is donated in the morning (from 8.00 to 11.00).This is due to the fact that the indicators range during the day, and those that are obtained from the morning fence of biomaterial are used as average data.
- Blood is recommended to take on an empty stomach, and a break between the surrender of biomaterial and the last meal can be from 8 to 14 hours.This item is due to the fact that the food that enters the body has an effect on both the blood condition and the level of hormones.
- From smoking before the analysis, one should also refrain.You can smoke a cigarette at least an hour before blood donation.But for some studies, the abstinence period increases.
- Strong emotional shocks and physical activity should be avoided, as they can affect biochemical indicators and hormone levels.
- Be sure to warn the doctor about the drugs taken.Perhaps, for an analysis, they will have to refuse for a while.
You should know, not only for how much blood should not be smoked before the blood, but for what period to refrain from alcohol.For various studies, doctors call different terms, but the minimum - one day.
Habit and analysis of urine
Regarding whether it is possible to smoke before the analysis of urine, the opinions of doctors mainly converge.Most experts do not recommend using tobacco products before taking Urin.This is due to the fact that the chemicals present in tobacco affect the composition of urine and can distort the results obtained during the study.
Disagreements arise about what time should pass after a smoked cigarette until the delivery of biological fluid.The main amount of nicotine and other harmful substances begins to be filtered by the kidneys and settles in the urine about 8 hours after entering the body.But tobacco begins its effect on the body almost immediately.
Tobacco ingredients, entering the body, affect the hormonal background, the liver and other internal organs.Therefore, it is advisable not to smoke at least an hour before the analysis, but it is better to refrain for 10-12 hours.
Conclusion
Data obtained as a result of analyzes may be incorrect due to a recently smoked cigarette.This will lead to an incorrect diagnosis and, accordingly, incorrectly prescribed treatment.But given that regular smoking negatively affects the health and condition of the body, poor test results can reflect the real picture and indicate the available pathologies.