Can I drink water before delivery and blood tests

Category Hematology | August 12, 2017 17:53


  • Complete blood count
  • Biochemical analysis of blood Urinalysis

analysis of blood and other components clearly reflects the state of the inner workings of the body and helps identify the different infringements.The food and even water, adoption just before taking the blood can reduce the accuracy of the results.

Can I drink water before delivery and blood tests and, in some cases, this can not be done?

Depending on the type of laboratory research, medical patients impose a variety of requirements for the training to them.Analysis of blood and urine - the most commonly prescribed medical procedures.Thanks to the knowledge of the composition of the physician can assess the patient's condition, to discover his development of a disease at an early stage and monitor the effect of the subsequent medical treatment.However, violation of the rules of preparation for analysis can lead to erroneous data, based on which, respectively, an erroneous diagnosis is made.

general analysis of

procedure of blood sampling on the general analysis is simple and familiar to many.In laboratory studies, doctors on the basis of the resulting biomaterial can determine the cellular composition of human blood, as well as value indicators such as hemoglobin and ESR (erythrocyte sedimentation rate).Deviations of particular values ​​allows those skilled analyzes reveal the presence of inflammation in the body, to determine the form of the disease (bacterial or viral), as well as diagnose the presence of iron deficiency anemia, and various pathologies.

In some cases, it is a common blood test indicators signal the beginning of serious blood disorders.However, most worried about the question whether it is possible to drink water before blood donation on the overall analysis?There is no consensus among physicians about what to eat and drink before the procedure can be, and what is not, does not exist.But doctors still emit some mandatory guidelines that must be followed just before the preparation of a common blood test:

  • last meal should be at least 10-12 hours before giving blood;
  • The day before the procedure to exclude from your diet fatty and fried foods, sweets and hot spices.

the morning, just before delivery of blood for analysis, doctors are advised to eat breakfast, but the question whether it is possible to drink water before delivery of analyzes on the blood, doctors respond positively.However, there are a few conditions: mineral, sparkling and sweet water is not allowed.With the exception of the recommendations of nutritionists also advised not to drink alcohol for 2-3 days prior to the date of the analysis of blood or smoke for 2-3 hours before the procedure.

Biochemical analysis of blood

Blood Biochemistry - another method of research, thanks to which it becomes possible to determine the state of the internal organs and body systems.As a rule, this procedure, doctors resort with suspected liver or kidney disease, the development of rheumatic processes and violations of water-salt metabolism, lack of essential vitamins and trace elements.The question whether it is possible to drink water before blood donation, with respect to biochemical research is also relevant.However, in contrast to the general analysis, in this case requires a thorough preparation, the rules which are sufficiently stringent:

  • 2-3 days prior to blood donation refuse thermal procedures (bath, sauna and tanning), and sports (running andetc.);
  • For 10-12 hours can not eat;
  • Biochemical analysis shall exclusively to conduct physical therapy and medication;
  • optimal time to donate blood on biochemistry - from 8:00 to 10:00;
  • the day of the procedure, can not smoke or drink alcohol, you should also refrain from physical and psychological stress;
  • Drinking water is also not recommended.

also much in preparation for analysis depends on the type of laboratory research.So, for example, if you give blood cholesterol, you can eat no later than 12-14 hours.And if you expect the analysis to determine the levels of uric acid, then for 2-3 days before you need to go on a special diet.Her diet excludes foods with purines (kidney and liver), meat and fish, black tea and coffee.On the day of delivery of the analysis can not even drinking ordinary water, as it will reduce the concentration of uric acid in the blood and, therefore, give false results.


Another procedure that is common in medical practice - a urinalysis.Some types of food can affect its structure.Is it possible to drink water before delivery of analyzes on urine?

  • 1 day before the procedure, discard the fruit and vegetable intake, changing the color of urine (beets, carrots, etc.);
  • Do not take diuretics;
  • 12 hours before delivery of the analysis did not have sex;
  • take a warm shower, using antibacterial soap before collecting urine.

Just before the fence of urine in the morning do not drink water, even drinking as the concentration of the components after drinking will be lower, which will give unreliable results.