(Part 1) How to Read Your Health Checkup Results: Blood Pressure, Blood Sugar, Cholesterol, BMI & Liver and Kidney Function Tests
Understanding your health checkup report doesn't have to be confusing.
Learn what your blood pressure, blood sugar, cholesterol, BMI, and liver and kidney test results really mean so you can take better control of your health.
1. Blood Pressure: One of the First Numbers to Check
Blood pressure is one of the most important numbers in your health checkup because it reflects how hard your heart works to pump blood throughout your body.
A blood pressure reading consists of two numbers. The top number, called systolic pressure, measures the pressure when your heart beats. The bottom number, known as diastolic pressure, measures the pressure when your heart rests between beats.
For most healthy adults, a blood pressure below 120/80 mmHg is considered normal. Readings that remain above this level over time may increase the risk of heart disease, stroke, and kidney disease.
High blood pressure often develops without noticeable symptoms, making regular health screenings essential. Healthy eating, regular physical activity, maintaining a healthy weight, reducing sodium intake, limiting alcohol, and managing stress can all help support healthy blood pressure levels.
📊 Blood Sugar Levels at a Glance
| Test | Normal | Prediabetes | Diabetes |
|---|---|---|---|
| Fasting Blood Sugar | Below 100 mg/dL | 100–125 mg/dL | 126 mg/dL or higher |
| HbA1c (3-Month Average) | Below 5.7% | 5.7%–6.4% | 6.5% or higher |
💡 Quick Tip: Regular blood sugar testing can help detect prediabetes early and reduce the risk of developing type 2 diabetes.
📚 Source: American Diabetes Association (ADA). Standards of Care in Diabetes—2026.
3. Cholesterol: More Than Just One Number
Your cholesterol test provides several important measurements rather than a single result.
These include Total Cholesterol, LDL cholesterol, HDL cholesterol, and Triglycerides. Together, they provide a more complete picture of your cardiovascular health.
LDL cholesterol is often referred to as "bad cholesterol" because high levels can contribute to plaque buildup inside the arteries. HDL cholesterol is known as "good cholesterol" because it helps remove excess cholesterol from the bloodstream.
Maintaining healthy cholesterol levels through balanced nutrition, regular exercise, avoiding smoking, and maintaining a healthy weight can significantly reduce your risk of heart disease.
📊 Cholesterol Levels at a Glance
| Test | Healthy Range |
|---|---|
| Total Cholesterol | Below 200 mg/dL |
| LDL (Bad Cholesterol) | Below 100 mg/dL |
| HDL (Good Cholesterol) | 60 mg/dL or higher |
| Triglycerides | Below 150 mg/dL |
These values are general reference ranges for most healthy adults. Individual targets may vary depending on age, medical history, and cardiovascular risk.
💡 Quick Tip: Eating more fruits, vegetables, whole grains, and healthy fats while staying physically active can help improve your cholesterol profile.
📚 Source: American Heart Association (AHA). Cholesterol Management Guidelines.
4. BMI: Is Your Weight Within a Healthy Range?
Body Mass Index (BMI) is a simple calculation that estimates whether your weight is appropriate for your height.
For most adults, a BMI between 18.5 and 24.9 is considered healthy.
Although BMI is widely used during routine health examinations, it does have limitations. It cannot distinguish between muscle and body fat, so athletes and very muscular individuals may have a high BMI despite having very little body fat.
Your waist circumference, body composition, physical activity level, and overall health should also be considered when evaluating your weight.
📊 Healthy Weight & Waist Size Guide
| Measurement | Healthy Range | Increased Health Risk |
|---|---|---|
| BMI | 18.5–24.9 kg/m² | 25.0 kg/m² or higher |
| Waist Circumference (Men) | Less than 40 in (102 cm) | 40 in (102 cm) or more |
| Waist Circumference (Women) | Less than 35 in (88 cm) | 35 in (88 cm) or more |
💡 Quick Tip: BMI is a useful screening tool, but combining it with waist circumference provides a better assessment of your overall health risk.
📚 Source: Centers for Disease Control and Prevention (CDC) & National Heart, Lung, and Blood Institute (NHLBI).
5. Liver and Kidney Function Tests
Your liver and kidneys are essential organs that keep your body functioning properly.
The liver helps process nutrients, produce important proteins, store vitamins, and remove harmful substances from the bloodstream. Blood tests often include liver enzymes such as ALT and AST to evaluate liver health.
Your kidneys continuously filter waste products from your blood while helping regulate blood pressure, electrolyte balance, and fluid levels. Kidney function is commonly assessed using Creatinine and eGFR measurements.
Abnormal liver or kidney test results do not always indicate serious disease, but they should never be ignored. Your healthcare provider may recommend additional testing or follow-up if necessary.
📊 Common Liver & Kidney Function Tests
| Test | What It Measures | Healthy Reference* |
|---|---|---|
| ALT | Liver enzyme | About 7–56 U/L |
| AST | Liver enzyme | About 10–40 U/L |
| Creatinine | Kidney function | About 0.6–1.3 mg/dL |
| eGFR | Kidney filtration rate | 60 mL/min/1.73m² or higher |
Reference ranges may vary slightly between laboratories.
💡 Quick Tip: Staying hydrated, limiting alcohol, maintaining a healthy weight, and taking medications only as directed can help protect both your liver and kidneys.
📚 Source: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Liver Disease & Kidney Disease Information.
Conclusion
Your health checkup report provides valuable information about your overall health—often before symptoms appear.
By understanding key measurements such as blood pressure, blood sugar, cholesterol, BMI, and liver and kidney function, you can make informed lifestyle choices and work with your healthcare provider to protect your long-term health.
Regular preventive health screenings are one of the most effective ways to detect potential health problems early and maintain a healthier future.
👉 Next Article
Learn the normal blood pressure ranges by age, understand what your numbers mean, and discover practical tips for maintaining a healthy blood pressure.
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