A blood test is a procedure that is often prescribed to identify a particular medical condition in a person. All experts agree on whether you can smoke before taking the test.
Nicotine affects blood biochemical parameters. Alkaloids can contribute to misinterpretation of expert test results.
Effects on blood volume
Before conducting the study, the doctor warns the patient why it is necessary to adhere to the restrictions on its preparation. Whether smoking affects blood tests does not depend on the type, brand and composition of cigarettes. Nicotine alters biomaterial structures significantly. The result of its use may be the receipt of incorrect information. This also applies to marijuana and other types of smoking ingredients. Its use can be a reason to refer the patient to be examined by a narcologist. Hookah smoking also interferes with the results.
Bad habits have the following effects on human biomaterial indicators:
- changes cell carotypes;
- leads to changes in platelet properties;
- increases cholesterol values;
- adjust hormone ratio;
- changing biochemical substrates;
- makes 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 deviations in overall performance.
Due to the release of catecholamines, arterioles occur, which causes a decrease in blood flow. The fluid itself becomes more viscous, which slightly complicates the process of taking it from the patient.
Due to nicotine, oxygen supply to internal organs is reduced. As a result of the combination of hemoglobin and carbon monoxide, a new substance emerges. It cannot supply oxygen to tissues.
Oxyhemoglobin causes acute deficiency. Oxygen starvation causes a person to feel unwell.
Attention!Smoker's lymphocyte count increases within an hour after using nicotine. High concentrations of these elements, if done correctly, are an indication of the development of inflammation in the body. Smoking causes doctors to get the wrong health results.
A person who is accustomed to smoking a pack of cigarettes a day artificially increases hemoglobin levels. This study may not indicate that patients have very low protein values and iron deficiency anemia is present.
Finger blood donation results
This procedure must be performed on an empty stomach. Doctors forbid smoking before handing over biomaterials from fingers. If the patient has been using nicotine, then in the first 30 minutes he has an increased catecholamine index. Cortisol levels in the fluid also increase significantly.
With changes, a decrease in eosinophil values is observed. At the same time, the concentration of neutrophils increases. The result is a distortion of the study picture.
Do not smoke for at least an hour before taking biomaterials from fingers. Doctors have calculated how many hours before the start of the procedure allowed smoking. You can do this in 4 hours, but it is better to abstain for 12 hours or a day.
Biomaterial analysis of veins
This type of study, with proper preparation, allows you to identify the largest number of pathologies in patients. Blood from veins is taken for general analysis, immunology and biochemistry.
Experts prohibit smoking before the procedure. Nicotine tends to alter blood structure. Due to the action of alkaloid and tobacco fumes, oxygen starvation occurs, and failure occurs in the bloodstream. The result is the distortion of the data obtained on the liquid.
Venous blood is considered the most informative biomaterial. The fence is made to confirm or deny the existence of the following diseases:
- virus infection;
- pathology of the liver and kidneys;
- cancer tumor;
- violations of the digestive tract;
- disorders in the body's hormonal activity.
Blood is donated from a vein if HIV is suspected. Smoking is prohibited 4 hours before the procedure.
Biomaterials from veins are also taken to detect hepatitis. Patients were required to quit smoking three days before the study was conducted. If syphilis is detected, it is also necessary to avoid smoking for a few days before analysis.
In addition, patients must donate blood on an empty stomach. He was forbidden to eat food 12 hours before the study.
Blood donation for glucose and smoking
Research is needed to identify diabetics. Doctors do not recommend smoking at least an hour before the procedure. Nicotine itself has no significant effect on glucose levels, but alkaloids affect other parameters of the biomaterial. In fact, it is not recommended to smoke 12 hours or days before the sugar test.
Biomaterial research for hormones
Alkaloids can have a negative effect on the function of hormones and the body's glands. Quitting smoking is required before conducting such research.
Avoiding bad habits is necessary for 3 days before determining testosterone levels in men, as nicotine is known to reduce its production by the testicles.
While taking the analysis for hCG, a woman's body should stop smoking at least 2 hours before the test. This hormone is an indication of the beginning of pregnancy. A woman, after getting confirmation, is recommended to abandon a bad habit completely.
Nicotine can interfere with thyroid hormone testing. He is very susceptible to tobacco.
You should not smoke for three days before taking fluids to check thyroid function.
Especially important!Bad habits provoke the development of thrombocytopenia in a person. The disease is characterized by bleeding disorders. Internal bleeding can occur. This pathology is also dangerous with a high probability of the formation of clots (thrombi) in the vessel, posing a threat to life.
How does it affect donations?
Nicotine alters not only cellular, but also blood plasma structure. Someone who decides to become a donor undergoes a special study. Prior to 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 greatly alters plasma biochemistry.
Habits and urine analysis
Experts clearly answer the question of whether it is permissible to smoke before passing a urine test. They do not recommend using nicotine for at least an hour before urinating to draw in body fluids. Tobacco and its components affect the composition of urine. Moreover, if a person smokes narcotic substances, then the analysis will show its presence in the urine.
Therefore, doctors strongly discourage patients from using nicotine before submitting biomaterials for analysis, as smoking can have a significant effect on its composition.
Cigarettes greatly affect the human hormonal background, and smoking right before the study can significantly distort the outcome picture and lead to a misdiagnosis.