A blood test is a procedure often prescribed to identify a specific medical condition in a person. All experts are unanimous on the possibility of smoking before taking the tests.
Nicotine affects the biochemical parameters of the blood. An alkaloid may contribute to the expert's misinterpretation of the test results.
Impact on blood counts
Before carrying out a study, the doctor warns the patient why it is necessary to observe the preparation prohibitions. The fact that smoking affects a blood test is independent of the type, brand and composition of cigarettes. Nicotine significantly alters the structure of the biomaterial. The consequence of its use may be the receipt of erroneous information. This also applies to marijuana and any other type of smoking herb. Its use may be a reason to refer a patient for examination to a narcologist. Hookah smoking also distorts the results.
A bad habit has the following effect on human biomaterial indicators:
- modifies the cell's karyotype;
- leads to a change in platelet properties;
- increases the value of cholesterol;
- adjusts the proportion of hormones;
- converts biochemical substrates;
- produces false levels of hemoglobin;
- increases the concentration of cortisol and catecholamines.
Smoking, in the latter case, causes a rapid decrease in the biological fluid of eosinophils with neutrophils. There are deviations in overall performance.
Due to the release of catecholamines, arterioles spasm occurs, which leads to deterioration of blood flow. The liquid itself becomes more viscous, which makes the patient's withdrawal process somewhat difficult.
Because of nicotine, the supply of oxygen to internal organs is reduced. As a result of the combination of hemoglobin and carbon monoxide, a new substance appears. It cannot supply oxygen to tissues.
Oxyhemoglobin causes its acute shortage. The lack of oxygen makes the person feel bad.
Attention!A smoker's lymphocyte count increases within an hour after using nicotine. A high concentration of these elements, when properly conducted, is an indicator of the development of inflammation in the body. Smoking causes the doctor to receive a false health result.
A person used to smoking a pack of cigarettes a day artificially increases the hemoglobin level. The study may not reveal that the patient has a really low protein value and iron deficiency anemia.
Digital blood donation results
This procedure should be done on an empty stomach. The doctor forbids smoking before handing the finger biomaterial. If the patient used nicotine, the catecholamine index increased in the first 30 minutes. The level of cortisol in the fluid also increases significantly.
With the changes, a decrease in the value of eosinophils is observed. At the same time, the concentration of neutrophils increases. The result is a distortion of the study's image.
Do not smoke for at least an hour before removing the biomaterial from a finger. Doctors calculated how many hours before the procedure is allowed to smoke. You can do this in 4 hours, but it is better to abstain for 12 hours or a day.
Biomaterial analysis of a vein
This type of study, with the proper preparation, allows the identification of the largest number of pathologies in a patient. Blood from a vein is collected for general, immunological and biochemical analyzes.
The specialist forbids smoking before the procedure. Nicotine tends to alter the structure of the blood. Due to the action of the alkaloid and tobacco smoke, there is a lack of oxygen, a failure in blood flow. The result is a distortion of the data obtained in the liquid.
Venous blood is considered the most informative biomaterial. Its fence is made to confirm or deny the presence of the following diseases:
- viral infections
- ;
- liver and kidney pathologies;
- cancerous tumors;
- violations in the digestive tract;
- disruptions in the body's hormonal activity.
Blood is donated through a vein if HIV is suspected. Smoking is prohibited 4 hours before the procedure.
The biomaterial of a vein is also removed to detect hepatitis. The patient must stop smoking three days before the study. If syphilis is detected, it is also necessary to avoid smoking in the days before the analysis.
In addition, the patient must donate blood on an empty stomach. He is prohibited from eating 12 hours before the study.
Blood donation for glucose and smoke
Research is needed to identify a person with diabetes. Doctors do not recommend smoking at least an hour before the procedure. Nicotine alone has no significant effect on glucose levels, but the alkaloid affects other parameters of the biomaterial. In fact, it is not recommended to smoke 12 hours or days before the sugar test.
Research of biomaterials for hormones
An alkaloid can negatively affect hormones and glands in the body. Quitting smoking is necessary before any research.
Avoiding a bad habit is necessary for 3 days before determining the level of testosterone in men, as the property of nicotine is known to reduce its production by the testicles.
When doing an analysis for hCG, the female body needs to stop smoking at least 2 hours before the test. This hormone is an indicator of early pregnancy. When confirmed, the woman is advised to completely abandon the bad habit.
Nicotine can interfere with thyroid hormone tests. She is highly exposed to tobacco.
It is necessary to not smoke for three days before taking fluids to examine thyroid function.
Especially important!A bad habit causes the development of thrombocytopenia in a person. The disease is characterized by a hemorrhagic disorder. Internal bleeding may occur. This pathology is also dangerous, with a high probability of the formation of clots (thrombi) in the vessels, representing a threat to life.
How does this affect donation?
Nicotine changes not only the cells, but also the plasma structure of the blood. A person who decides to become a donor undergoes a special study. Before analysis, he needs to avoid alcohol for two days. It is important to stop smoking a few hours before the study starts, as nicotine significantly changes plasma biochemistry.
Habit and urine analysis
The experts answer unequivocally the question of whether smoking is allowed before passing the urine test. They do not recommend using nicotine for at least an hour before urinating to extract body fluids. Tobacco and its components affect the composition of urine. In addition, if a person smoked any narcotic herb, the analysis will reveal its presence in the urine.
Thus, doctors strongly discourage patients from using nicotine before sending a biomaterial for analysis, since smoking can have a significant effect on its composition.
Cigarettes visibly affect the human hormonal base, and smoking immediately before the study can significantly distort the image of your results and lead to an incorrect diagnosis.