Welcome to Ask Doctor Zac, a weekly column from news.com.au. This week, Dr Zac Turner explores whether or not blood tests are back for you.

A clinical trial is launching to test the effectiveness of new tests that aim to detect genetic signatures of cancer in the blood.

Unlike expensive positron emission tomography (PET) scans or invasive lumbar punctures, the new blood test measures the ratio ...

Breakthrough method detects subtle molecular signals in blood, allowing for diagnosis months or even years before symptoms ...

A national pilot study designed to determine if blood tests can help detect cancers earlier is open for enrollment.Results of ...

Although an elevated PSA measurement can indicate prostate cancer, there can be other reasons for elevated levels.

A new blood test uses what is known as biomarkers to identify a person’s Alzheimer’s disease status, changing how we monitor ...

A groundbreaking study of nearly 45,000 people shows how a blood test measuring proteins can estimate which organs are aging ...

“The brain is the gatekeeper of longevity,” said Wyss-Coray. “If you’ve got an old brain, you have an increased likelihood of ...

As for why cortisol varies throughout the day: "Cortisol is very important in helping a person transition from sleep to wakefulness," Zalzala explained. "This triggers a 'morning cortisol surge' -- a ...

We spoke to Geoff Scott, the former head of medicine at Tottenham Hotspur, to find out exactly what the early days of ...

To solve the mystery of the Guadeloupian woman’s incompatible blood, scientists turned to cutting-edge genetic analysis.