A blood test is a commonly prescribed procedure to identify a specific medical condition in a person. All experts are unanimous on whether you can smoke before taking tests.
Nicotine affects the biochemical parameters of the blood. The alkaloid may contribute to the misinterpretation of the test results by a specialist.
Effects on blood count
Before conducting a study, the doctor warns the patient why it is necessary to follow the prohibitions on preparation for it. Whether smoking affects a blood test does not depend on the type, brand and composition of the cigarettes. Nicotine significantly changes the structure of the biomaterial. The consequence of using it can be getting the wrong information. This also applies to marijuana and any other type of smoking herb. Their use may be a reason to refer a patient to a narcologist. Hookah smoking also distorts the results.
A bad habit has the following effect on the performance of human biomaterial:
- modifies the cell karyotype;
- causes a change in platelet properties;
- raises cholesterol;
- regulates the ratio of hormones;
- converts biochemical substrates;
- makes false hemoglobin levels;
- increases the concentration of cortisol and catecholamines.
Smoking in the latter case provokes a rapid decrease in the biological fluid of eosinophils with neutrophils. There are deviations in the overall performance.
Due to the release of catecholamines, spasm of the arterioles occurs, which leads to deterioration of blood flow. The fluid itself becomes more viscous, which slightly complicates the process of taking it from the patient.
Due to nicotine, the supply of oxygen to the internal organs is reduced. As a result of the combination of hemoglobin and carbon monoxide, a new substance appears. It cannot provide oxygen to the tissues.
Oxyhemoglobin provokes an acute deficiency of it. Oxygen starvation makes a person feel bad.
Attention!The number of smoker's lymphocytes increases within one hour after nicotine use. The high concentration of these elements, when properly conducted, is an indicator of the development of inflammation in the body. Smoking leads to a false health result.
A person who is used to smoking a pack of cigarettes a day artificially raises hemoglobin levels. The test may not reveal that the patient has really low protein levels and pre-existing iron deficiency anemia.
Finger blood donation results
This procedure should be done on an empty stomach. The doctor forbids smoking before passing the biomaterial from the finger. If the patient has used nicotine, then for the first 30 minutes he has an elevated level of catecholamine. The level of cortisol in the fluid also increases significantly.
Decreased eosinophil counts have been observed with changes. At the same time, the concentration of neutrophils increases. The result is a distortion of the picture of the study.
Do not smoke for at least one hour before taking soil biomaterial. Doctors have calculated how many hours before the procedure smoking is allowed. You can do this for 4 hours, but it is better to abstain for 12 hours or a day.
Analysis of vein biomaterial
This type of study, with proper preparation, allows you to identify the largest number of pathologies in a patient. Vein blood is taken for general, immunological and biochemical analysis.
The specialist forbids smoking before the procedure. Nicotine tends to change the structure of the blood. Due to the action of the alkaloid and tobacco smoke, oxygen starvation occurs, and blood flow fails. The result is a distortion of the liquid data obtained.
Venous blood is considered to be 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;
- disorders of the digestive tract;
- disorders in the hormonal activity of the body.
Blood is given from a vein when HIV is suspected. Smoking is prohibited 4 hours before the procedure.
Vein biomaterial is also taken to detect hepatitis. The patient should give up tobacco three days before the study. If syphilis is detected, it is also necessary to avoid smoking for several days before the test.
In addition, the patient must donate blood on an empty stomach. He was forbidden to eat for 12 hours before the test.
Blood donation for glucose and smoking
Research is needed to identify a person with diabetes. Doctors do not recommend smoking for 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.
Biomaterial study for hormones
The alkaloid can adversely affect the body's hormones and glands. Smoking cessation is required before any such examination.
Avoiding a bad habit is necessary for 3 days before determining the level of testosterone in men, as it is known that the property of nicotine reduces its production by the testicles.
When performing an hCG test, the woman's body should quit smoking at least 2 hours before the test. This hormone is an indicator of the beginning of pregnancy. When confirmed, the woman is advised to completely give up the bad habit.
Nicotine can affect the testing of thyroid hormones. It is highly exposed to tobacco.
You should not smoke for three days before taking thyroid test fluid.
Especially important!A bad habit provokes the development of thrombocytopenia in humans. The disease is characterized by a violation of bleeding. Internal bleeding may occur. This pathology is also dangerous with a high probability of clot formation (thrombi) in life-threatening vessels.
How does it affect donation?
Nicotine changes not only the cellular but also the plasma structure of the blood. A person who decides to become a donor undergoes a special study. Before the analysis, he should avoid alcohol for two days. It is important to quit smoking a few hours before the start of the study, as nicotine significantly alters plasma biochemistry.
Habit and urine analysis
Experts unequivocally answer the question of whether smoking is allowed before passing a urine test. They do not recommend the use of nicotine at least one hour before urination to withdraw body fluid. Tobacco and its components affect the composition of urine. In addition, if a person smokes a narcotic herb, then the analysis will reveal its presence in the urine.
Thus, physicians strongly recommend that patients use nicotine before submitting a biomaterial for analysis, as smoking can have a significant effect on its composition.
Cigarettes have a significant effect on a person's hormonal background, and smoking immediately before the test can significantly distort the picture and lead to a misdiagnosis.