1. Blood can be donated in the morning on an empty stomach (or in the afternoon and evening, 4-5 hours after the last meal). 1-2 days before the study to exclude from the diet foods high in fat.
2. Blood counts can change significantly during the day, so it is recommended to take all tests in the morning.
3. On the eve of the study (within 24 hours) to exclude alcohol, intense exercise, medication (in consultation with your doctor).
4. 1-2 hours before donating blood to refrain from smoking, do not drink juice, tea, coffee, you can drink still water. Eliminate physical stress (running, fast climbing stairs), emotional arousal. It is recommended to rest and calm down 15 minutes before donating blood.
5. Blood should not be donated for laboratory examination immediately after physiotherapy procedures, instrumental examination, X-ray and ultrasound examinations, massage and other medical procedures.
6. At control of laboratory indicators in dynamics it is recommended to carry out repeated researches in identical conditions - in one laboratory, to donate blood at the same time of day, etc.
7. Blood for research should be donated before taking drugs or not earlier than 10 - 14 days after their cancellation. To assess the control of the effectiveness of treatment with any drugs, it is necessary to conduct research 7 - 14 days after the last dose. Be sure to tell your doctor if you are taking medication.
General rules are written for all analyzes, but some studies require special training and additional restrictions.
General blood test
Blood can be donated in the morning on an empty stomach (or in the afternoon and evening, 4-5 hours after the last meal). 1-2 days before the study to exclude from the diet foods high in fat.
Biochemical analysis of blood ("biochemistry")
The day before taking blood for biochemistry it is necessary to exclude alcohol intake, for 1 hour - smoking. It is desirable to take blood on an empty stomach in the morning. At least 12 hours should elapse between the last meal and the blood draw. Juice, tea, coffee, chewing gum are not allowed. you can drink water. It is necessary to exclude the increased psychoemotional and physical loadings.
Urea
1-2 days before the study it is necessary to follow a diet: refrain from eating purine-rich foods - liver, kidneys, as well as limit the diet of meat, fish, coffee, tea. Contraindicated intense exercise.
Cholesterol, lipoproteins
Blood must be donated after 12-14 hours of fasting. Two weeks before the study, it is necessary to discontinue drugs that reduce blood lipids, unless the goal is to determine the frequency of cardiac therapy with these drugs.
Glucose
When donating blood for glucose (in addition to the basic requirements of preparation for tests), you can not brush your teeth and chew gum, and morning tea / coffee (even unsweetened) is prohibited. A morning cup of coffee will dramatically change glucose levels. They will also be affected by contraceptives, diuretics and other medications.
Hormones
Blood for hormonal tests should be taken on an empty stomach in the morning. In the absence of such a possibility, some hormones can be donated blood 4-5 hours after the last meal in the daytime and evening (except for those studies for which blood must be donated in the morning).
1-2 days before the tests to exclude from the diet foods high in fat, the last meal should not be abundant. 1 day before the study, psycho-emotional and physical comfort is required (calm state without overheating and hypothermia).
• Thyroid hormones
At the initial check of the level of thyroid hormones, cancel the drugs that affect the function of the thyroid gland 2-4 weeks before the study. At control of treatment - to exclude reception of drugs on the day of research and it is obligatory to specify it in the Referral form (to specify also the information on reception of other medicines - aspirin, tranquilizers, corticosteroids, oral contraceptives).
• Sex hormones
In women of reproductive age, the results of hormonal tests are influenced by physiological factors associated with the stage of the menstrual cycle. During the examination for sex hormones should indicate the phase of the menstrual cycle. Hormones of the reproductive system must be taken strictly on the days of the cycle:
LH, FSH - 3-5 days of the cycle;
Estradiol - 5 7 or 21-23 days of the cycle;
Progesterone - 21-23 days of the cycle.
17-OH-progesterone, DHA - sulfate, testosterone - 7 9 days of the cycle.
Prolactin - donate blood in the morning at rest, before the study to exclude palpation of the mammary glands.
Oncomarkers
• PSA (general, free possession)
After prostate biopsy and prostate massage, blood for PSA can be taken no earlier than 2 weeks. Postsurgical PSA level is determined not earlier than 6 weeks after intervention.
Blood test for infections
Blood can be donated in the morning on an empty stomach (or in the afternoon and evening, June
