As for why cortisol varies throughout the day: "Cortisol is very important in helping a person transition from sleep to ...

Unlike expensive positron emission tomography (PET) scans or invasive lumbar punctures, the new blood test measures the ratio of two proteins, pTau217 and ß-Amyloid 1-42, which are implicated in ...

For years, it has been one of the most tantalizing ideas in medicine: One day, a simple blood test will detect nascent ...

This simple blood test shows average A1C levels over the past two to three months and helps track how well diabetes is being controlled.

Signs of Alzheimer’s disease could be detectable in the blood as early as middle age, a study has found, raising hopes that ...

Blood tests can help a doctor diagnose a variety of health conditions, including infections, anemia, high cholesterol, vitamin deficiencies, organ failure, HIV, cancer, and diabetes. Doctors use ...

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

An MCHC blood test between 32-36 grams per deciliter (g/dL) is considered normal. Results below or above this range could be abnormal, but don't necessarily indicate there's a problem.

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

To develop the test, researchers analyzed 6553 blood samples, 3076 from patients with cancer and 3477 from healthy individuals, divided into a training dataset of 4807 samples and an internal ...