Feeling well does not always mean that there are no changes taking place in the body. Some conditions can develop for a long time without noticeable symptoms, which is why preventive health checkups can help assess key health indicators and identify possible abnormalities at an early stage.

At the same time, prevention does not mean taking an endless list of tests “just in case.” The scope of a preventive checkup depends on age, sex, lifestyle, family history, previous illnesses, and individual risk factors.

What Is a Preventive Health Checkup?

A preventive checkup is carried out not because of a specific complaint, but to assess general health and identify risk factors before significant symptoms appear.

It may include:

a medical consultation and review of health history;
blood pressure measurement;
assessment of body weight and other physical indicators;
laboratory tests;
diagnostic procedures;
age-appropriate screening examinations.

A preventive checkup should not be identical for everyone. Tests that are useful for one person may not be necessary for another.

Why Are Some Conditions Discovered by Chance?

Some health problems can develop in the early stages without noticeably affecting how a person feels. Someone may continue their usual routine without realizing there is a reason to see a doctor.

For example, changes in the following may sometimes occur without obvious symptoms:

blood glucose levels;
lipid metabolism;
thyroid function;
iron stores;
certain liver and kidney indicators.

An abnormal laboratory result is not a diagnosis by itself. Results should be assessed together with age, symptoms, medical history, medications, and other clinical information.

Which Laboratory Tests May Be Used for Preventive Screening?

There is no universal set of laboratory tests that every person needs to take regularly. However, a doctor may recommend certain tests depending on age and individual risk factors.

Complete Blood Count

A complete blood count helps assess key blood parameters, including hemoglobin, red blood cells, white blood cells, and platelets.

Changes in these values may indicate the need for further evaluation, but they should always be interpreted together with other clinical information.

Blood Glucose

Blood glucose testing may be used to assess carbohydrate metabolism.

In some cases, a doctor may also recommend glycated hemoglobin (HbA1c), which reflects average blood glucose levels over a longer period.

Lipid Profile

A lipid profile assesses indicators of lipid metabolism, including total cholesterol, different lipoprotein fractions, and triglycerides.

Doctors use these values when assessing cardiovascular risk.

Liver and Kidney Function Markers

Depending on the situation, tests may include ALT, AST, bilirubin, creatinine, and other biochemical markers.

However, routinely taking an extensive biochemical panel without medical indications is not necessary for everyone.

TSH

Thyroid-stimulating hormone (TSH) is used to assess thyroid function. The need for testing and how often it should be performed depend on age, symptoms, existing conditions, and other factors.

Should Vitamins and Micronutrients Be Checked?

Tests for vitamin D, vitamin B12, ferritin, iron, and other markers are often included in preventive health checkups.

However, testing a very broad range of vitamins and micronutrients without a specific reason is usually unnecessary.

For example, ferritin testing may be particularly useful when iron deficiency is suspected, while vitamin B12 testing may be appropriate in the presence of certain symptoms or risk factors.

The most appropriate set of tests is best determined together with a doctor.

Age Matters Too

Preventive health needs change throughout life.

The range of recommended examinations for a young person without chronic conditions or risk factors may be very different from what is appropriate after the age of 40–50 or for someone with a family history of certain diseases.

With age, doctors may place greater emphasis on:

cardiovascular risk;
disorders of glucose metabolism;
bone health;
age-related cancer screening;
monitoring of chronic conditions.

Specific recommendations still depend not only on age, but also on the individual medical history.

Why Is Family History Important?

If close relatives have had certain diseases, a doctor may recommend starting preventive monitoring earlier or performing it more frequently.

This can be particularly relevant in families with a history of:

diabetes;
cardiovascular disease;
lipid disorders;
certain cancers;
thyroid disease.

A family history does not mean that a person will necessarily develop the same condition, but it can influence the preventive care plan.

Do You Need to Have Blood Tests Every Year?

There is no single rule stating that every healthy person should have the same set of laboratory tests every year.

Testing frequency depends on:

age;
general health;
chronic conditions;
risk factors;
previous test results;
medical recommendations.

Preventive care should therefore be individualized rather than based on the principle that “more tests are always better.”

Can You Interpret Test Results on Your Own?

Laboratory results should be considered in the context of the overall clinical picture.

Even if a result falls outside the stated reference range, it does not necessarily mean that a disease is present. Likewise, a result within the reference range does not rule out every possible health condition.

Significant abnormalities or unclear results should be discussed with a doctor.

Prevention Is More Than Laboratory Testing

Laboratory diagnostics are only one part of preventive healthcare.

Other important factors include:

regular physical activity;
balanced nutrition;
adequate sleep;
blood pressure monitoring;
avoiding smoking;
limiting or avoiding alcohol;
vaccination;
age-appropriate screening programs;
timely medical attention when symptoms appear.

Preventive checkups are most useful when they are part of a broader, consistent approach to health.

How to Choose the Right Tests

A good starting point is to consider your age, family history, lifestyle, and existing health conditions. If you are unsure which tests are appropriate, it is best to discuss them with a doctor.

On the INVITRO Armenia website, you can review available laboratory tests, descriptions, prices, and preparation instructions. The specific set of tests should be selected based on individual medical indications.

Why Have Preventive Health Checkups If You Feel Fine?