Abnormal MCU Results? Understand What They Mean and Your Next Steps

Receiving your medical check-up (MCU) results often raises new questions. The report may contain numbers, abbreviations, reference ranges, arrows, and the letters H or L that look worrying, especially when you feel healthy and have no significant complaints.

However, a single value outside the reference range is not enough to confirm a disease. Your doctor needs to assess the results together with your symptoms, health history, the medications and supplements you take, a physical examination, imaging, and changes compared with previous results. For this reason, an MCU report should be understood as one connected set of information, not a collection of standalone numbers.

This article helps you read your report in a more focused way: from understanding reference ranges and H/L flags and recognizing the function of each group of tests, to deciding when results can simply be monitored or need to be discussed with a doctor. The goal is not to encourage self-diagnosis, but to help you be better prepared when you talk with your doctor.

This approach is in line with preventive health policy in Indonesia. In 2026, the Indonesian Ministry of Health (Kemenkes) emphasized that health screening programs need to be followed by prevention and management of relevant findings, rather than stopping at the screening stage.

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What Are Medical Check-Up Results?

Medical check-up results are a report that summarizes the health examinations you have undergone. They may include an interview about your health history, a physical examination, blood and urine tests, heart tests, imaging, the doctor’s conclusion, and follow-up recommendations.

MCU components are not always the same for everyone. The types of tests may be tailored to your age, the purpose of the check-up, your occupation, symptoms, medical history, risk factors, and the package you choose. That is why your report cannot always be compared directly with a family member’s or coworker’s report.

Sections Commonly Found in an MCU Report

Before checking whether a result is high or low, first get to know the sections of the report:

• Patient identity and test date.
• Name of the test or parameter assessed.
• Test value or finding.
• Unit of measurement.
• Laboratory reference range.
• H or L flags, arrows, asterisks, or certain colors.
• Technical comments from the laboratory.
• The radiologist’s report for imaging tests.
• The MCU doctor’s conclusion.
• Recommendations for monitoring, repeat testing, or consultation.

First, make sure your identity details and test date are correct. Next, check whether the report is complete. At some facilities, laboratory results may be available first, while the radiology report or the doctor’s conclusion follows once all components have been reviewed.

Why Are MCU Results Not a Diagnosis on Their Own?

An MCU can be used for screening, monitoring, or getting an initial picture of your health. Screening helps identify risk factors or changes that need attention. However, screening results do not always explain the cause.

For example, a single blood sugar result needs to be read based on the type of test and whether you were fasting. Similarly, a single blood pressure measurement only reflects your condition at that moment. A record of several measurements can provide more complete context.

To establish a diagnosis, your doctor may need:

• A review of symptoms and health history.
• A physical examination.
• Repeat tests.
• More specific tests.
• Comparison with previous results.
• Assessment by a doctor with relevant expertise.

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How to Read MCU Results Correctly

Reading MCU results correctly is not just about looking for numbers in red. Use the following sequence to make your report easier to understand.

1. Check Your Identity Details, Dates, and Completeness

Make sure your name, date of birth, and test date are correct. Also check the sample collection date, if listed.

If the report consists of several pages, check whether all components are available, for example:

• Laboratory results.
• ECG.
• Radiology report.
• Doctor’s conclusion.
• Follow-up recommendations.

Do not draw conclusions from a preliminary report or an incomplete document.

2. Remember Your Condition at the Time of Testing

Some results can be affected by preparation and your physical condition when the test was done, including:

• Fasting status.
• Food and drinks consumed.
• Strenuous physical activity.
• Hydration status.
• Medications, vitamins, herbal products, or supplements.
• Menstruation, if relevant.
• Temporary illness.
• Adherence to sample collection instructions.

Food, drinks, medications, supplements, strenuous activity, menstruation, and not following fasting instructions properly can affect certain test results. For this reason, share this information with your doctor. Even so, do not use it as a reason to dismiss results without evaluation.

3. Read the Value, Unit, and Reference Range Together

The same number can mean different things if the units are different. So always look at these three elements together:

1. The result value.
2. The unit of measurement.
3. The reference range on the report.

Avoid comparing your numbers with random tables from the internet or social media. Laboratories may use different methods, equipment, units, and reference ranges. To assess your results, use the reference range listed on your own report.

4. Understand Reference Ranges

A reference range is a range set by the laboratory based on test results in a particular reference group. This range helps with interpretation, but it is not an absolute boundary between health and illness, because biological variation can still occur.

This means:

• Healthy people can occasionally have results outside the range.
• People with a medical condition can have results that are still within the range.
• Individual targets may differ based on age, coexisting conditions, treatment, and risk level.
• Results must be read together with symptoms and other clinical information.

5. Check Flags and Notes

Laboratories may use H or L flags, arrows, asterisks, or colors to draw attention to certain results.

In addition, look for notes such as:

• Sample condition or quality.
• Technical comments.
• Recommendations for repeat testing.
• Results still awaiting validation.
• The doctor’s interpretation.
• Recommendations for further tests.

Flags help filter information, but they do not determine a diagnosis.

6. Group Results by Type of Test

Instead of reading dozens of numbers separately, group the results into:

• Complete blood count.
• Blood sugar.
• Lipid profile.
• Liver function.
• Kidney function.
• Urinalysis.
• Blood pressure and body composition.
• Heart tests.
• Radiology tests.

This approach helps you see whether only one parameter has changed or whether there is a pattern that needs to be assessed as a whole.

7. Compare With Previous Results

A single result is a snapshot of your condition at the time of testing. In contrast, several results over time can show the direction of change.

When comparing reports, check:

• Whether the units are the same.
• Whether the reference ranges are the same.
• Whether the tests were done at different laboratories.
• Whether fasting status and preparation were similar.
• Whether the change is temporary or consistent.

Small changes are not necessarily clinically meaningful. For this reason, let your doctor assess trends based on the full context.

8. Read the Doctor’s Conclusion and Recommendations

Do not stop at the laboratory results page. Look for the section that contains:

• The MCU conclusion.
• Findings that need monitoring.
• Recommendations for repeat testing.
• Recommendations for changing habits.
• The need for a specialist consultation.
• Further tests.

This is the section that connects your test data with your next health steps.

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What Do H, L, Positive, Negative, and Borderline Mean?

Symbols on the report indicate whether a result is above, below, or within the reference range, and whether a particular finding was detected. However, their meaning still depends on the type of test and the system used by the testing facility.

H or High

H generally means the result is above the upper limit of the laboratory reference range.

However, H does not automatically mean:

• The condition is dangerous.
• You have a specific disease.
• You need treatment.
• Further tests are always needed.

Your doctor still needs to consider the type of parameter, how far it deviates from the reference range, other results, symptoms, and changes over time.

L or Low

L generally means the result is below the lower limit of the reference range.

The meaning of an L result differs for each parameter. A low hemoglobin value, for example, cannot be treated the same way as a low level of a certain lipid parameter. For this reason, read the result based on what the test is for.

Positive and Negative

For certain tests:

• Positive usually means the substance, organism, antibody, cell, or finding being looked for was detected.
• Negative usually means the finding was not detected within the limits of what the test can detect.

A positive result does not always confirm a diagnosis, and a negative result does not always rule out every possibility. Some tests require confirmation, especially if the result does not match the symptoms.

Borderline or Near the Limit

Borderline means the result is close to the limit of a range or decision category.

Your doctor may recommend:

• Monitoring.
• Changes in habits.
• Repeat testing.
• Assessment of other risk factors.
• Additional tests.

In other words, borderline should not be simplified to “safe” or “sick.”

What If There Are Other Codes?

Codes such as H1, double asterisks, certain colors, or nonstandard abbreviations may have different meanings from one facility to another.

1. Look for the legend on the report.
2. Check the notes below the table.
3. Contact the testing facility.
4. Ask your doctor.

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Does a Result Outside the Reference Range Mean Disease?

Not always. A result outside the reference range needs to be assessed based on the type of test, your condition at the time of testing, symptoms, health history, and other results.

What Can Affect the Results?

Some factors that can affect test results include:

• Fasting status.
• Food and drinks.
• Physical activity.
• Hydration status.
• Medications and supplements.
• Time of sample collection.
• Temporary illness.
• Menstruation.
• Sample collection method and sample quality.

These factors do not mean the result is definitely wrong. Rather, this information helps your doctor assess whether the result needs to be confirmed or interpreted with special consideration.

What If Results Are Outside the Reference Range but You Have No Symptoms?

Some risk factors can develop without obvious symptoms. High blood pressure and lipid disorders, for example, can be detected through testing before a person notices any complaints.

However, results outside the range can also be affected by biological variation or temporary conditions. So you do not need to jump to the worst conclusion right away. Even so, do not ignore findings that recur, change significantly, or come with a follow-up recommendation.

What If Results Are Within the Reference Range but Symptoms Persist?

Results within the reference range do not always explain all of your symptoms, because:

• Not every condition is covered in a single MCU package.
• Each test only assesses certain aspects.
• A change may not yet be visible on that test.
• Your symptoms may require a different type of test.
• A diagnosis requires clinical assessment.

If chest pain, shortness of breath, palpitations, dizziness, getting tired easily, or other symptoms persist or recur, consult a doctor even if certain results are within the range.

Why Do Reference Ranges Differ?

Reference ranges may differ because of:

• The analytical method.
• Equipment.
• Reagents.
• Units.
• Age group or sex.
• The population used as the reference.

For this reason, use the range on your own report. If trends need to be compared across laboratories, your doctor will take differences in methods, units, and reference ranges into account.

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What Parameters Are Included in Medical Check-Up Results?

The contents of medical check-up results vary. The following explanation helps you recognize the general function of each group of tests; it is not meant to establish a diagnosis or provide universal reference ranges.

Complete Blood Count

A complete blood count (CBC) measures the number and characteristics of several blood components, including:

• Red blood cells.
• Hemoglobin.
• Hematocrit.
• White blood cells.
• Platelets.
• Average red blood cell size.

Red blood cells and hemoglobin carry oxygen. White blood cells help the body’s defense system, while platelets support blood clotting. However, a single change can have many causes. Your doctor will read all components together with your symptoms and health history.

Blood Sugar and HbA1c

The report may include several types of blood sugar tests.

• Fasting blood sugar reflects your glucose level after you have fasted according to instructions.
• Random blood sugar reflects your glucose level at the time the sample was taken.
• HbA1c gives a picture of your average blood sugar over about two to three months.

A single result is not always enough to establish a diagnosis. In addition, certain conditions that affect red blood cells can affect how HbA1c is interpreted.

Read also:

• HbA1c: An Important Test for Knowing Your Long-Term Blood Sugar Levels
• Fasting Blood Sugar: A Complete Guide to Normal Values and How to Control It

Lipid Profile

A lipid profile usually includes:

• Total cholesterol.
• LDL.
• HDL.
• Triglycerides.

High LDL levels contribute to the formation of atherosclerotic plaque, while high triglycerides accompanied by high LDL or low HDL can reinforce the picture of cardiovascular risk. However, modern risk assessment does not look at a single lipid number alone. Doctors also consider blood pressure, diabetes, smoking habits, family history, and clinical condition.

The 2026 AHA/ACC guideline also emphasizes a more comprehensive assessment of atherogenic lipoproteins, as well as targets tailored to individual risk levels. This means one person’s LDL target is not necessarily the same as another person’s.

Read also:

• Lipid Profile: Benefits, Results, and How to Manage It
• Blood Pressure, Cholesterol, and Blood Sugar: Normal Numbers You Should Know

Liver Function

A liver panel may include albumin, bilirubin, ALP, ALT (SGPT), AST (SGOT), GGT, and other parameters as needed.

Some tests provide information about liver function, while others may indicate possible tissue injury. However, liver panel results alone usually cannot confirm a specific disease. Your doctor will assess the pattern of results, symptoms, medications, supplements, and other tests.

Kidney Function

Kidney function tests may include creatinine, urea and/or blood urea nitrogen (BUN), estimated glomerular filtration rate (eGFR), and urine albumin if tested. The parameters used may differ between laboratories.

Creatinine is used to help estimate the kidneys’ filtering capacity through eGFR. In addition, urine albumin can help assess kidney damage in certain groups. These results need to be read together with age, body condition, medical history, hydration, and test trends.

Urine Tests

Urinalysis can assess color and clarity, acidity, protein, glucose, ketones, bilirubin, blood or certain cells, and other findings depending on the type of test.

The way the sample is collected matters because contamination can change the results. For this reason, follow the facility’s instructions and do not interpret a single urinalysis finding in isolation.

Blood Pressure and Pulse

Blood pressure and pulse are an important part of many MCU examinations.

A single blood pressure result is a snapshot at the time of measurement. To get a more accurate picture, your doctor may use repeated measurements at a health facility or home monitoring. In addition, measurement technique, cuff size, body position, activity, caffeine, and rest time can affect the results.

The American Heart Association emphasizes that a single high reading is not always a reason to panic right away. However, the measurement needs to be repeated using the correct technique and discussed with a doctor if it remains high.

Body Composition

Weight, height, body mass index (BMI), and waist circumference can provide context about metabolic risk.

However, these numbers should not be used to judge a person’s health based on appearance alone. Your doctor will relate them to blood pressure, blood sugar, lipids, activity, eating habits, muscle mass, and individual condition.

ECG and Heart Tests

Electrocardiography, or ECG, records the heart’s electrical activity. This test can show the rate and regularity of the heart rhythm, electrical conduction patterns, and certain changes that need further assessment.

ECG results must be interpreted by a doctor together with symptoms and health history. In addition, a normal ECG at one point in time does not always rule out a disorder that appears only occasionally.

Certain MCU packages may also include:

• Echocardiography, to look at the structure and function of the heart using sound waves.
• A treadmill test, to assess the heart’s response, blood pressure, rhythm, and symptoms when the body works harder.
• A coronary artery calcium score test (calcium score), to assess calcium in the coronary arteries in the context of certain risk assessments. This test is not intended for everyone.

Read also:

• Electrocardiography (ECG): Overview, Benefits, and Expected Results
• Cardiac Treadmill Test: Function, Procedure, and When You Need It
• Heart Calcium Score: Early Detection of Coronary Heart Disease Risk

Radiology Tests

Some MCU packages include a chest X-ray or other imaging.

A radiologist reads the images and prepares a report that usually includes the reason for the test, the technique, findings, conclusion, and recommendations if needed. Radiology findings need to be linked with symptoms, health history, and other tests. For this reason, do not draw conclusions about the meaning of a radiology term from just one sentence in the report.

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How Are MCU Results Related to Heart Health?

MCU results cannot determine whether a person will develop heart disease. However, some parameters can help doctors identify risk factors that can be managed early.

Risk Factors Can Develop Without Symptoms

High blood pressure, lipid disorders, diabetes, smoking, physical inactivity, and obesity are important risk factors for cardiovascular disease. Some of them often develop without typical symptoms.

That is why the value of an MCU is not just getting a “normal” or “abnormal” label. The results can serve as baseline data for:

• Monitoring changes over time.
• Recognizing patterns of risk factors.
• Setting priorities for changing habits.
• Adjusting health targets.
• Choosing further tests if needed.

Why Should Active Professionals Pay Attention to Patterns in Their Results?

With a busy work schedule, complaints such as fatigue, mild shortness of breath, palpitations, or dizziness are easily put down to lack of sleep and stress.

These symptoms can indeed have many causes. Even so, it is not right to assume they are all just caused by stress, or, conversely, to assume they all come from the heart.

MCU results can be a starting point for a more objective discussion. Your doctor can assess whether your symptoms are related to the test findings, require a different type of evaluation, or can simply be monitored.

What Is a Cardiometabolic Risk Pattern?

Cardiometabolic describes the relationship between metabolic factors and the health of the heart and blood vessels.

Your doctor may assess several components at the same time:

• Blood pressure.
• Blood sugar and HbA1c.
• LDL, HDL, and triglycerides.
• Weight and waist circumference.
• Kidney function.
• Physical activity.
• Smoking habits.
• Family history.

Assessing patterns provides more complete information than focusing on a single number.

Does Everyone Need Further Heart Testing?

No. ECG, echocardiography, treadmill tests, rhythm monitoring, cardiac CT, or coronary artery calcium score tests are chosen based on symptoms, initial results, health history, risk factors, previous results, the benefits and risks of the test, and the doctor’s judgment.

For example, the USPSTF does not recommend routine screening with resting or exercise ECG in adults without symptoms who are at low cardiovascular risk. Untargeted testing can produce findings that trigger further procedures without clear benefit.

That is why “more” testing is not necessarily better. The right test is the one that addresses your clinical needs.

When Should You See a Cardiologist?

A consultation with a cardiologist may be considered if:

• There are findings on an ECG or treadmill test that require evaluation or come with a follow-up recommendation.
• Several cardiometabolic factors change at the same time.
• You develop chest pain, shortness of breath, palpitations, dizziness, or a reduced ability to do physical activities.
• There is a family history of heart disease at a young age or of sudden death.
• Results have changed significantly compared with previous tests.
• The MCU doctor recommends a cardiovascular evaluation.

However, not every result outside the range requires a cardiologist. A general practitioner, MCU doctor, or internist can also help determine the appropriate referral.

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What Should You Do If Results Are Outside the Reference Range?

The next step depends on the type of parameter, the size of the change, symptoms, other results, and the doctor’s recommendation.

If Results Are Slightly Outside the Range

If the result is only slightly different and you have no symptoms:

1. Recheck your fasting status and preparation.
2. Note the medications or supplements you take.
3. Read the comments on the report.
4. Compare with previous results.
5. Keep the complete report.
6. Schedule a consultation if recommended.

Do not immediately assume the result is safe. However, you also do not need to jump to the worst conclusion.

If Results Have Changed Compared With Previous Tests

Check the units used, the reference ranges, differences between laboratories, your condition at the time of testing, and the time between tests.

Next, bring both reports to your doctor. Your doctor will determine whether the change is meaningful, needs to be monitored, or needs further investigation.

If Several Parameters Change at the Same Time

Changes in blood pressure, blood sugar, lipid profile, kidney function, and body composition that occur together may prompt a more comprehensive risk assessment.

Even so, this pattern does not mean you automatically need every heart test. Your doctor still needs to choose the relevant steps.

If Your Doctor Recommends Repeat Testing

Repeat testing may aim to:

• Confirm the result.
• Reduce the influence of temporary conditions.
• Assess trends.
• Monitor changes.
• Evaluate the response to therapy or changes in habits.

The timing of repeat testing varies by type of test and condition. For this reason, do not set your own schedule based on general information.

Do Not Change Medications or Supplements on Your Own

Avoid:

• Stopping medications.
• Increasing or reducing doses.
• Starting certain supplements.
• Following an extreme diet.
• Drastically limiting your activity.
• Ordering a series of further tests without a doctor’s guidance.

Test results can influence treatment decisions. However, those decisions must take into account the benefits, risks, drug interactions, and your overall condition.

When Should You Seek Help Immediately?

Urgency is determined mainly by your current symptoms and condition, not by the colors or flags on the report.

Seek help immediately if you experience:

• Severe or persistent chest pain, pressure, or tightness.
• Worsening shortness of breath.
• Pain spreading to the arm, back, neck, jaw, or abdomen.
• Fainting or reduced consciousness.
• Cold sweats, nausea, or severe dizziness together with chest symptoms.
• Drooping on one side of the face, weakness on one side of the body, or difficulty speaking.

Call PSC 119 (Public Safety Center) or go to the nearest emergency department (ER) immediately. The 119 service is Indonesia’s national medical emergency access line, coordinated by the Indonesian Ministry of Health.

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Why Should a Doctor Explain Your Results?

You are welcome to study your report on your own. However, a doctor helps turn test data into priorities and a plan suited to your condition.

Information Your Doctor Considers

Your doctor may assess:

• Your main complaint.
• The pattern and timing of symptoms.
• Medical history.
• Family history.
• Medications and supplements.
• Your condition at the time of testing.
• Previous results.
• Physical examination.
• Relationships between findings.
• The purpose of the MCU.

This is why two people with the same numbers may receive different recommendations.

How Do Doctors Set Priorities?

Doctors help distinguish findings that can simply be monitored, need confirmation, require changes in habits or medication, need a referral, or are not meaningful in a particular context.

In addition, your doctor can help you avoid repeat testing that is not needed.

How Is a Health Plan Developed?

A follow-up plan may include monitoring, realistic lifestyle changes, risk factor management, a review of medications, repeat testing, further tests as indicated, and multidisciplinary consultation.

An individualized approach is more appropriate than giving everyone the same package of interventions.

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MCU Result Consultations at Heartology

Heartology Cardiovascular Hospital can help evaluate MCU findings related to the heart and blood vessels. When you come for a consultation, you can bring your blood test results, ECG, echocardiography, cardiac CT, imaging results, and previous medical records.

Doctors can help:

• Identify the most relevant findings.
• Link results with your symptoms and history.
• Assess risk factor patterns.
• Determine whether monitoring is sufficient.
• Choose further tests if needed.
• Develop a more individualized health plan.

Heartology offers online consultation scheduling and a choice of doctors from various cardiovascular fields as well as supporting specialties.

Tests such as ECG, treadmill tests, echocardiography, coronary artery calcium score tests, or cardiac CT are not automatically needed. Doctors choose them based on indications and clinical needs.

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How Long Do MCU Results Take?

The time needed to complete MCU results varies depending on the type and number of tests.

The duration may be affected by:

• Laboratory processing.
• Radiology tests.
• Interpretation of the ECG or heart tests.
• Result validation.
• The need to repeat sample collection.
• Preparation of the doctor’s conclusion.
• Facility policy.

Some results may be available earlier, while the final report only becomes fully available after all tests have been reviewed.

Before leaving the facility, ask:

• When is the final report expected to be available?
• Through which channel will the report be sent?
• Is a results consultation available?
• Who can be contacted if the results are incomplete?
• Are there any findings that need faster follow-up?

How Can You Access Your Results?

Results may be available as a printed report, by email, through a patient portal, a health facility app, or government channels if integrated.

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What Should You Bring to Your Consultation?

Good preparation helps the consultation run more efficiently.

Bring:

• Your complete MCU report.
• Previous test results.
• A list of medications and their doses.
• A list of vitamins, herbal products, and supplements.
• Your medical history.
• Your family health history.
• A referral letter, if you have one.
• Allergy notes.
• Blood pressure data or home monitoring records.
• A list of questions.

Record Your Symptoms Specifically

Do not just write “often short of breath.” Record:

• What the symptom is.
• When it started.
• How long it lasts.
• How often it occurs.
• Whether it appears during activity or at rest.
• Factors that make it worse or better.
• Its impact on work or daily activities.
• Other accompanying symptoms.

Read also:

• Your First Heart Consultation? Here Is What You Need to Prepare

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Questions You Can Ask Your Doctor

Use the following questions to help you get a more focused explanation:

• Which results should I pay the most attention to?
• Does this result need to be confirmed?
• Are there any changes compared with my previous tests?
• Do my medications or supplements affect the results?
• Do several findings form a particular risk pattern?
• Which further tests are truly necessary?
• Do I need to see a specialist?
• Which changes in habits should I prioritize most?
• When should the tests be repeated?
• Which symptoms should I not ignore?
• What are the benefits, risks, and alternatives of the recommended tests?
• How can I monitor my condition at home?

No question is too simple. A good consultation helps you take a more active part in making decisions about your health.

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Conclusion

Medical check-up results should not be treated as a collection of numbers you have to interpret on your own. Read each value together with its unit and reference range. In addition, look at patterns across tests, compare with previous results, and review the doctor’s recommendations.

A single value outside the range does not necessarily mean disease. Conversely, results within the range do not necessarily explain all of your symptoms. Symptoms, trends, health history, medications, and risk factors provide equally important context.

Keep your medical check-up results as baseline data for future monitoring. If there are changes in blood pressure, blood sugar, lipid profile, kidney function, ECG, your ability to do physical activities, or symptoms suspected to be related to the heart, a consultation can help determine the steps that are truly relevant.