Diagnostics·Diagnostics
Blood test
Informed by recognized medical guidance
Overview
A blood test is a medical test that checks your health by taking a small sample of blood from your body. The sample is sent to a lab to measure things like your red and white blood cells, cholesterol, blood sugar, or signs of infection or disease.
Key facts
- Blood tests are one of the most common and safest medical tests.
- They can help diagnose many conditions, from anaemia (low iron) to diabetes and infections.
- Results usually take a few hours to a few days, and your doctor will explain what they mean.
Yes, blood tests are extremely common. Most people will have several blood tests in their lifetime, often as part of a routine check-up or to investigate symptoms.
Anyone can need a blood test at any age. They are used for people of all backgrounds and health statuses.