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Lab Tests Explained

Clear, medically reviewed guides to the most commonly ordered laboratory blood tests β€” what each test measures, how to prepare, the normal reference ranges, and what high or low results can mean. Every result is best interpreted with your doctor.

What is a lab test?

A lab test analyses a sample of blood, urine, or tissue to measure specific markers of health. Doctors use them to screen for disease, diagnose conditions, and monitor treatment. Reference ranges vary slightly between laboratories, so results should always be interpreted alongside your symptoms and medical history.

Common Lab Tests

Need a test reviewed?

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