{"id":8974,"date":"2024-12-12T14:56:34","date_gmt":"2024-12-12T12:56:34","guid":{"rendered":"https:\/\/medilab.km.ua\/?p=8974"},"modified":"2026-04-20T18:54:45","modified_gmt":"2026-04-20T15:54:45","slug":"general-blood-test-preparation-rules-characteristics-of-the-procedure-and-interpretation-of-the-results","status":"publish","type":"post","link":"https:\/\/medilab.km.ua\/en\/general-blood-test-preparation-rules-characteristics-of-the-procedure-and-interpretation-of-the-results\/","title":{"rendered":"Complete blood count: preparation rules, features of the procedure and interpretation of results"},"content":{"rendered":"

What is a complete blood count (CBC)?<\/strong><\/h3>\n

Complete blood count<\/a> \u2014 is a basic laboratory test that allows you to assess your overall health, identify inflammatory processes, anemia, allergies, blood clotting disorders, and other systemic diseases. CBC includes counting the number of formed blood elements, measuring the level of hemoglobin, hematocrit, ESR, and analyzing the leukocyte formula.<\/p>\n

This is one of the most informative and accessible screening methods, which is often performed during preventive examinations, before surgical interventions, or at the first complaints of malaise.<\/p>\n

Why follow the rules before submitting the ZAK<\/strong><\/h3>\n

Proper preparation for blood donation guarantees the reliability of the results. Violations of the regimen, stress, food or physical exertion can temporarily change the composition of the blood, which will complicate the diagnosis.<\/p>\n

Avoiding errors is not only about the accuracy of the laboratory report, but also about the ability of the doctor to make the right clinical decision without additional examinations.<\/p>\n

Basic rules for preparing for a general blood test<\/strong><\/h3>\n
    \n
  1. \n

    Donating blood on an empty stomach.<\/strong>
    Optimally \u2014 from 7:00 to 10:00. After waking up, you are allowed to drink some water, but not tea, coffee or juices. Eating 8\u201312 hours before the test changes glucose, leukocytes, and lipids.<\/p>\n<\/li>\n

  2. \n

    Calm before the procedure.<\/strong>
    30 minutes before the test, you need to sit calmly, not be nervous. It is important to avoid strong emotions and physical exertion - even brisk walking or climbing stairs.<\/p>\n<\/li>\n

  3. \n

    Refusal from alcohol.<\/strong>
    Strict restriction for 24\u201348 hours. Alcohol affects the water-salt balance and can cause changes in the leukocyte formula.<\/p>\n<\/li>\n

  4. \n

    Do not smoke 2 hours before delivery.<\/strong>
    Nicotine causes vasospasm and a temporary increase in some indicators, including hemoglobin and platelets.<\/p>\n<\/li>\n

  5. \n

    Restrictions on medications.<\/strong>
    Some medications (antibiotics, hormones, anti-inflammatory drugs, iron, vitamins) affect the test. If possible, the test should be postponed or the doctor will instruct you on how to interpret the result.<\/p>\n<\/li>\n

  6. \n

    Do not perform ultrasound, X-ray, or physiotherapy before delivery.<\/strong>
    These procedures can temporarily alter metabolism and affect leukocyte or ESR levels.<\/p>\n<\/li>\n<\/ol>\n

    \"Patient<\/p>\n

    What can affect the result of the ZAK<\/strong><\/h3>\n
    \n\n\n\n\n\n\n\n\n\n\n
    Factor<\/th>\nPossible impact<\/th>\n<\/tr>\n<\/thead>\n
    Eating<\/td>\nIncreased leukocytes, glucose, lipids<\/td>\n<\/tr>\n
    Physical activity<\/td>\nLeukocytosis, increased ESR<\/td>\n<\/tr>\n
    Alcohol<\/td>\nDecreased red blood cells, abnormal ESR<\/td>\n<\/tr>\n
    Smoking<\/td>\nIncrease in hemoglobin, platelets<\/td>\n<\/tr>\n
    Stress<\/td>\nIncreased neutrophils<\/td>\n<\/tr>\n
    Medicine<\/td>\nPossible fluctuations in all indicators<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    How is the blood collection procedure done?<\/strong><\/h3>\n