{"id":10828,"date":"2025-11-03T04:15:54","date_gmt":"2025-11-03T02:15:54","guid":{"rendered":"https:\/\/medilab.km.ua\/?p=10828"},"modified":"2026-04-29T14:06:53","modified_gmt":"2026-04-29T11:06:53","slug":"analyzes-before-the-operation-that-are-important-for-the-examination-and-are-most-important-for-them","status":"publish","type":"post","link":"https:\/\/medilab.km.ua\/en\/analyzes-before-the-operation-that-are-important-for-the-examination-and-are-most-important-for-them\/","title":{"rendered":"Tests before surgery: which tests are important and why they are prescribed"},"content":{"rendered":"

Preparation for surgery is an important stage that helps the doctor assess the patient's health, predict possible risks, and choose the safest surgical tactics. Even if the patient feels well, the body may have hidden features that affect the course of the operation or anesthesia.<\/p>\n

That is why before each planned operation, a complex of laboratory tests and instrumental examinations is mandatory.<\/p>\n

Why is it important to take tests before surgery?<\/h2>\n

The analyses allow us to assess:<\/p>\n

\u2022 the work of internal organs
\u2022 risk of bleeding
\u2022 blood clotting
\u2022 presence of inflammation or infection
\u2022 hemoglobin level and oxygen supply
\u2022 condition of the cardiovascular system
\u2022 the body's reaction to anesthesia<\/p>\n

This is necessary so that the operation goes without complications and the recovery period is as safe as possible.<\/p>\n

What tests are standard before a planned operation?<\/h2>\n

The list of examinations may vary depending on age, chronic diseases, and type of surgery. However, there are basic tests that are prescribed to almost everyone.<\/p>\n

The most common studies:<\/p>\n

\u2022 Complete blood count<\/a>
\u2022 Biochemical blood test
\u2022 Coagulogram<\/a>
\u2022 Blood type and Rh factor
\u2022 Blood glucose
\u2022 Urine analysis
\u2022 Tests for hepatitis B and C, HIV, syphilis
\u2022 ECG
\u2022 Fluorography or chest X-ray<\/p>\n

Additional tests may be added for patients with chronic conditions.<\/p>\n

Table: mandatory tests before surgery and why they are needed<\/h2>\n
\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Analysis<\/th>\nWhat does it show?<\/th>\nWhy is it important before surgery?<\/th>\n<\/tr>\n<\/thead>\n
Complete blood count<\/td>\nhemoglobin, leukocyte, platelet levels<\/td>\ndetection of anemia, inflammation, risk of bleeding<\/td>\n<\/tr>\n
Blood biochemistry<\/td>\nliver, kidneys, electrolytes<\/td>\nassessment of the functioning of organs that affect anesthesia<\/td>\n<\/tr>\n
Coagulogram<\/td>\nblood clotting<\/td>\nrisk of bleeding or thrombosis<\/td>\n<\/tr>\n
Blood type, Rh factor<\/td>\nindividual parameters<\/td>\nnecessary in case of blood transfusion<\/td>\n<\/tr>\n
Glucose<\/a><\/td>\nblood sugar<\/td>\ncontrol of the risk of complications during anesthesia<\/td>\n<\/tr>\n
Urine analysis<\/td>\nkidney condition, infections<\/td>\nimportant for antibiotic selection<\/td>\n<\/tr>\n
Hepatitis, HIV, syphilis<\/td>\nviral infections<\/td>\naffects treatment tactics and personnel safety<\/td>\n<\/tr>\n
ECG<\/td>\nheart rate<\/td>\nidentifies anesthesia risks<\/td>\n<\/tr>\n
X-ray \/ fluorography<\/td>\nlung condition<\/td>\nimportant for anesthesia and ventilation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Additional tests that may be prescribed<\/h2>\n

In some cases, the doctor prescribes additional examinations:<\/p>\n

\u2022 thyroid hormones (TSH, T4)
\u2022 ferritin and iron
\u2022 inflammatory markers (CRP)
\u2022 Ultrasound of the abdominal organs
\u2022 echocardiography
\u2022 coagulation tests<\/a> (D-dimer)
\u2022 PCR tests for suspected viral infections<\/p>\n

This depends on the upcoming surgery and the patient's health condition.<\/p>\n

\"blood<\/h2>\n

Tests before surgery under general anesthesia<\/h2>\n

If general anesthesia is planned, special attention is paid to:<\/p>\n

\u2022 heart (ECG, sometimes echocardiography)
\u2022 lungs (X-ray or fluorography)
\u2022 level hemoglobin<\/a>
\u2022 liver and kidney function<\/p>\n

The anesthesiologist uses this data to select a safe drug and dosage.<\/p>\n

How long are test results valid?<\/h2>\n

Usually:<\/p>\n

\u2022 general and biochemical tests \u2014 10\u201314 days
\u2022 coagulogram \u2014 7\u201310 days
\u2022 fluorography \u2014 up to 1 year (if there are no symptoms)
\u2022 ECG \u2014 2\u20134 weeks depending on age
\u2022 infection tests \u2014 1\u20133 months<\/p>\n

But the final deadline depends on the requirements of the medical institution.<\/p>\n

Do I need to prepare for the tests?<\/h2>\n

Yes, proper preparation affects the accuracy of the result.<\/p>\n

The patient is recommended to:<\/p>\n

\u2022 to come on an empty stomach<\/a> (8\u201312 hours without food)
\u2022 avoid alcohol and fatty foods the day before the tests
\u2022 do not overwork yourself before the day of the examination
\u2022 inform the doctor about all medications taken
\u2022 drink enough water<\/p>\n

If the patient is taking drugs that affect blood clotting (aspirin, anticoagulants), the doctor may change the regimen.<\/p>\n

When to see a doctor before taking tests<\/h2>\n

If you have:<\/p>\n

\u2022 cold symptoms
\u2022 high temperature
\u2022 exacerbation of chronic diseases
\u2022 high blood pressure
\u2022 unusual pain or weakness<\/p>\n

\u2014 be sure to notify your doctor. Some surgeries may be postponed until your condition stabilizes.<\/p>\n

Comprehensive tests before surgery are not a formality, but an important safety step. They help the doctor see the full picture of health and choose the best treatment option, and the patient feel calmer and more confident in the outcome.<\/p>","protected":false},"excerpt":{"rendered":"

Preparation for surgery is an important stage that helps the doctor assess the patient's health, predict possible risks, and choose the safest option.<\/p>","protected":false},"author":5,"featured_media":10829,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10828","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/posts\/10828","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/comments?post=10828"}],"version-history":[{"count":0,"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/posts\/10828\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/media\/10829"}],"wp:attachment":[{"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/media?parent=10828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/categories?post=10828"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/medilab.km.ua\/en\/wp-json\/wp\/v2\/tags?post=10828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}