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Diagnostic tests

Biopsy

A biopsy helps a doctor diagnose a medical condition. Find out more about what they are, about the different types, and about why biopsies are done.

Colonoscopy

During a colonoscopy, a tube is inserted into the anus to view the inside of the large bowel. It helps in diagnosing or treating some medical conditio...

CT scan – any part of your body can be scanned. Common areas include head, chest, abdomen and pelvis.

CT scan

A CT scan is a medical procedure carried out by a machine that creates a 3D image of your body by moving in a circular motion around you.

CT scan information for parents and carers

CT scans and radiation exposure in children and young people

Information on CT scans and radiation exposure in children and young people.

Electrocardiogram (ECG)

To find out how well your heart is working, your doctor may ask you to have an electrocardiogram (ECG). Learn more about it and why you may need an EC...

EEG is a test that measures the electrical activity of your brain by using electrodes attached to your head.

Electroencephalogram (EEG)

An electroencephalogram, or EEG, is a test that measures the electrical activity of the brain. It can be used to diagnose or monitor conditions such a...

Gastroscopy

Gastroscopy (upper endoscopy) is a procedure where a tube, inserted into the mouth, down the oesophagus, and into the stomach is used to view these or...

Regular eye tests can help make sure your eyes are in good health.

Eye tests

Regular eye tests can pick up problems before you have any symptoms. You don’t need a referral to see an optometrist. Learn more about eye tests here.

Woman having a hearing test.

Hearing test

Hearing tests can detect and measure the severity of hearing loss. Find out who needs a hearing test, what types of hearing tests can be done and how ...

An MRI scanner uses strong magnetic fields and radio waves to take detailed pictures.

MRI scan

An MRI scanner uses strong magnetic fields, radio waves and a computer to take pictures of the soft tissue inside of your body. Learn more about the b...

PET scan

A PET (positron emission tomography) scan is an imaging test used to diagnose certain diseases. Find out what the scan involves and how it works.

Ultrasound

An ultrasound scan creates a real-time picture of the inside of the body using sound waves. Find out more about the different types of ultrasounds and...

X-rays

An x-ray uses radiation to create a picture inside of the body. The x-ray beam is absorbed differently by various structures in the body to create the...

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