A blood test is often a prescribed procedure to determine a person's specific health condition. All experts are unanimous as to whether it is possible to smoke before taking the tests.
Nicotine affects blood biochemical parameters. The alkaloid may contribute to specialist misinterpretation of test results.
Effect on blood count
Before conducting the study, the doctor warns the patient why it is necessary to follow the prohibitions of preparation for it. If smoking affects a blood test, it is independent of the type, brand and composition of the cigarettes. Nicotine significantly changes the structure of biomaterials. Its use may result in receiving incorrect information. This applies to marijuana and any other type of smoking plant. Their use may be the reason for referring the patient to a narcologist. Hookah smoking also impairs the results.
A bad habit has the following effect on human biomaterial indicators:
- modifies the cell karyotype;
- leads to a change in platelet properties;
- increases cholesterol;
- adjusts hormone ratio;
- converts biochemical substrates;
- generates false hemoglobin levels;
- increases the concentration of cortisol and catecholamines.
Smoking tobacco in the latter case causes a rapid decrease in the biological fluid of eosinophils with neutrophils. There are discrepancies in overall performance.
Due to the release of catecholamines, arterioles spasm, which leads to worsening of blood flow. The fluid itself becomes more viscous, which slightly complicates the procedure of taking from the patient.
Nicotine reduces the supply of oxygen to the internal organs. As a result of the combination of hemoglobin and carbon monoxide, a new substance appears. It cannot provide oxygen to the tissues.
Oxyhemoglobin causes acute deficiency. Betting starvation makes a person feel bad.
Attention!The number of smokers' lymphocytes increases within one hour after nicotine use. A high concentration of these elements, when properly administered, is an indicator of the development of inflammation in the body. Smoking causes the doctor to get false health results.
A person who is used to smoking a pack of cigarettes artificially increases his hemoglobin level daily. The study may not reveal that the patient has a really low protein value and pre-existing iron deficiency anemia.
Finger blood donation results
This procedure must be done on an empty stomach. The doctor forbids smoking before handing the biomaterial from the finger. If the patient used nicotine, then he has an increased catecholamine index in the first 30 minutes. Fluid cortisol levels also increase significantly.
Decreased eosinophil count is observed with changes. At the same time, the concentration of neutrophils increases. The result is a distortion of the study image.
Do not smoke for at least an hour before taking the biomaterial from your finger. Doctors calculated how many hours before the procedure he was allowed to smoke. You can do this in 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. Blood from a vein 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 alkaloids and tobacco smoke, oxygen starvation occurs, and blood flow is blocked. The result is a distortion of the obtained fluid data.
Venous blood is considered to be the most informative biomaterial. The fence was made to confirm or deny the presence of the following diseases:
- viral infections;
- liver and kidney pathologies; cancerous tumors;
- violations in the digestive tract;
- disorders in the hormonal activity of the body.
Blood is given from a vein if 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, smoking should also be avoided for several days before analysis.
In addition, the patient should give blood on an empty stomach. He was forbidden to eat for 12 hours before the study.
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, smoking is not recommended 12 hours or days before the sugar test.
Research of biomaterials for hormones
Alkaloid can negatively affect the body's hormones and glands. Smoking cessation is required before any such research.
Avoiding a bad habit is necessary 3 days before determining testosterone levels in men, because it is known that the property of nicotine reduces its production in the testicles.
When tested for hCG, a woman's body must stop smoking at least 2 hours before the test. This hormone is an indicator of the beginning of pregnancy. Upon confirmation, the woman is recommended to completely give up the bad habit.
Nicotine can interfere with thyroid hormone testing. It is very susceptible to tobacco.
It is necessary not to smoke for three days before taking thyroid function test.
Especially important!A bad habit causes the development of thrombocytopenia in a person. The disease is characterized by a bleeding disorder. Internal bleeding may occur. This pathology is also dangerous with a high probability of clot formation (thrombus) in the vessels, which is life threatening.
How does this affect donation?
Nicotine not only changes the cellular but also the structure of the blood in the plasma. A person who decides to become a donor undergoes special research. Before the analysis, he must avoid alcohol for two days. It is important to stop 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 taking a urine test. They do not recommend the use of nicotine at least an hour before urination to extract body fluids. Tobacco and its components affect the composition of urine. Moreover, if a person has smoked any intoxicating weed, then the analysis will reveal its presence in the urine.
Thus, physicians strongly discourage patients from using nicotine before submitting the biomaterial for analysis, as tobacco smoking can have a significant impact on its composition.
Cigarettes noticeably affect the human hormonal background, and smoking immediately before the study can significantly distort the picture of its results and lead to misdiagnosis.