Understanding Your Blood Test Results: A Plain-Language Guide

First, a word about "normal ranges"

Most reports show a reference range next to each result. This is the range seen in most healthy people, but it varies by laboratory, age, sex, and sometimes ethnicity. A result slightly outside the range is not automatically a problem, and a result inside the range does not always mean all is well. What matters is the pattern, your history, and how values change over time - which is why results should be interpreted by a doctor, not by comparing numbers alone.

Complete blood count (CBC)

The CBC looks at the cells in your blood:

• Red blood cells / haemoglobin - carry oxygen. Low levels can indicate anaemia, which may cause tiredness.
• White blood cells - part of your immune system. Changes can relate to infection or inflammation.
• Platelets - help blood clot.

A CBC is a broad screen; abnormal results usually prompt your doctor to look further rather than to reach a conclusion on their own.

Blood sugar

These tests screen for diabetes and pre-diabetes:

• Fasting glucose - blood sugar after not eating, which is why fasting instructions matter.
• HbA1c - an average of blood sugar over roughly the past three months, so it is not affected by a single meal.

Higher values may suggest pre-diabetes or diabetes, but your doctor will confirm with the full context and, if needed, repeat testing.

Lipid profile (cholesterol)

The lipid profile relates to heart and blood-vessel health:

• LDL cholesterol - often called "bad" cholesterol; higher levels are generally less desirable.
• HDL cholesterol - often called "good" cholesterol; higher levels are generally favorable.
• Triglycerides - another blood fat influenced by diet, alcohol, and weight.

Cholesterol is interpreted alongside your overall heart-risk picture - blood pressure, smoking, family history, and blood sugar - not in isolation.

Liver and kidney function

• Liver tests (such as ALT, AST) reflect the health of liver cells. Values can rise for many reasons, from medications to fatty liver, and often need context and repeat testing.
• Kidney tests (such as creatinine and eGFR) estimate how well the kidneys filter. These guide medication safety and long-term health.

Thyroid function

TSH and related tests check whether the thyroid gland is over- or under-active, which can affect energy, weight, mood, and heart rate. These are usually tested when symptoms or history suggest a reason.

Other common tests

Depending on your check-up you might also see electrolytes (salts such as sodium and potassium), uric acid (relevant to gout), vitamin D or B12, and inflammation markers. Each adds a piece to the puzzle.

Why one flagged value is rarely the whole story

It is common to see one or two values just outside range on any report. That is why we look at:

• Patterns - several related results together.
• Trends - how a value compares with your past results.
• You - your symptoms, medications, diet, and history.

This is exactly why reviewing results with a doctor is so useful: context turns a confusing list of numbers into a clear plan.

Let us read your results together

Numbers are most useful when a doctor interprets them alongside your story. To plan a check-up that fits your history and goals, our medical team can help. Contact us on LINE (@younifyclinic) or WhatsApp +66 81 556 9696.

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