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Insights for Better Health
Explore practical guidance on lab testing, biomarkers, preventive health, and making informed decisions about your well-being.
DR. SARAH WILSON
MEDICALLY REVIEWED
A clearer view of your health
Regular lab testing helps you understand what is happening inside your body. It can identify potential health concerns early and help you make better decisions with your healthcare provider.
Here are ten common lab tests that provide useful insights into your overall health.
KEY TAKEAWAYS
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Track important health markers over time.
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Interpret results with your symptoms and history.
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Choose tests with guidance from a professional.
What Are Biomarkers?
Biomarkers are measurements found through blood, urine, or other laboratory tests. Each one reflects a particular process or function within your body.
Common examples include:
Blood glucose
Cholesterol
Haemoglobin
Vitamin D
Thyroid-stimulating hormone
Liver enzymes
Kidney-function markers
A single result provides a snapshot, while repeated testing can reveal how your health changes over time.
Cholesterol and Heart Health
A lipid panel usually measures:
Total cholesterol
LDL cholesterol
HDL cholesterol
Triglycerides
These biomarkers help healthcare professionals assess cardiovascular health. However, cholesterol results should be considered alongside factors such as age, blood pressure, lifestyle, and family history.
Blood and Immune Health
A Complete Blood Count measures different cells within your blood.
Red blood cells and haemoglobin help transport oxygen. White blood cells support the immune system, while platelets help your blood clot properly.
Changes in these markers may provide clues related to anaemia, infection, inflammation, or other health concerns.
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Liver Function
Liver biomarkers commonly include ALT, AST, bilirubin, and albumin.
These markers help show how well your liver is functioning. Abnormal results do not always indicate liver disease, but they may suggest that further evaluation is needed.
Kidney Function
Creatinine and estimated glomerular filtration rate, or eGFR, are commonly used to assess kidney function.
Your kidneys filter waste from the blood and help maintain fluid and electrolyte balance. Monitoring these biomarkers can help identify changes in kidney health.
Thyroid and Hormonal Health
Thyroid biomarkers may include TSH, T3, and T4. These hormones influence metabolism, energy, body temperature, and many other functions.
Hormone levels can naturally change with age, medication, stress, and different stages of life. Results should always be interpreted in context.
What Does the Reference Range Mean?
A reference range shows the values typically found in a group of healthy people. Your result may be marked as high or low when it falls outside this range.
However, reference ranges can vary between laboratories. A result outside the range does not automatically mean that you have a medical condition.
Your age, sex, medication, recent meals, exercise, hydration, and testing time may also influence certain results.
Why Trends Matter More Than One Result
One test provides a snapshot of your health. Repeated testing can show whether a biomarker is stable, improving, or moving in an unexpected direction.
Tracking trends can help you and your healthcare provider understand how your body responds to lifestyle changes, medication, or treatment.
Can You Improve Your Biomarkers?
Some biomarkers may change through healthier daily habits, including:
Eating a balanced diet
Staying physically active
Getting enough sleep
Managing stress
Maintaining a healthy weight
Avoiding smoking
Following prescribed treatment
The right approach depends on the specific marker and your individual health needs.
When Should You Speak With a Healthcare Professional?
Consider speaking with a healthcare professional if:
A result is significantly outside the reference range
The same marker remains abnormal across multiple tests
You have new or persistent symptoms
Your results change suddenly
You are unsure what your results mean
Avoid changing medication or taking supplements based only on a single result without professional guidance.
See the Bigger Picture
Biomarkers can provide valuable information about your health, but no single number tells the complete story. The most useful insights come from reviewing multiple markers, tracking changes over time, and considering your symptoms and medical history.
