Exams and Tests for Cancer: laboratory diagnostics of oncological diseases.
Molecular-biological study of blood tumor markers can be performed both in public clinics and in private medical centers.
The results of the study of alpha-fetoprotein serum level are usually ready within 1-2 days. If urgent analysis is needed – within two hours. Molecular biological examination of blood tumor markers should be performed on an empty stomach or 4 hours after having food.
How to prepare for the tests?
If there is a suspicion of cancer, it is recommended to pass a molecular biological examination of blood tumor markers. Many commercial laboratories offer customers many various promotions, discounts and loyalty programs.
The quality control of laboratory research, carried out according to international standards, is an additional guarantee of the accuracy of the test results.
What should I pay attention to when choosing a laboratory?
Cancer is a disease that requires an integrated approach to diagnosis. It is possible to estabilish such a diagnosis only after a complex of studies. But the usual tests will help to suspect this disease, which is easy to pass in almost any laboratory. It is a laboratory diagnostics that helps to determine why the possible problems are connected, and already purposefully search for their cause.
General blood test: will it show cancer?
A malignant tumor is an actively growing tissue that requires a large amount of “building material” and energy. It’s actively consumes substances necessary for the growth of the body, and releases metabolic products, including the ones with toxicity. These two processes involve the main changes that can be seen in the blood test results.
Intoxication leads to an increase in ESR, an increase in the number of neutrophils and a decrease in the number of lymphocytes. If these signs are accompanied by weakness, fatigue, loss of appetite and weight loss, the most serious diagnosis should be ruled out as soon as possible. This combination of signs is mostly pronounced in some forms of lymphogranulomatosis, with histiocytosis and neuroblastomas.
In tumors of the internal organs, hemopoietic system suffers often, hemoglobin decreases. The toxic effect of the products of tumor cells vital activity damages the membranes of erythrocytes, because of which their pathological forms can appear in the blood – echinocytes. In cancer of the bone marrow, immature blood cells are found.
The blood test for cancer is conducted in the same way as with any other disease. In the treatment room, the patient is taken whole blood in a specially prepared test tube. To hand over the biomaterial it is necessary on an empty stomach or at least 4 hours after eating. The result will be ready within 1-2 working days.
The specificity of such an investigation is not high, and it is impossible to diagnose cancer according to the results of a single blood test alone. The same increase in ESR is always observed with inflammation. Anemia can occur with malnutrition, iron deficiency or other diseases.