Following your doctor’s instructions is the most important part of preparing for a blood test. Sleeping well, staying hydrated, and avoiding certain foods and drinks can also provide benefits. Blood ...

Recent research suggests that blood tests may show markers of oral cancer. But a blood test isn’t enough to confirm an oral cancer diagnosis. A biopsy is the only way to confirm it. Blood tests for ...

A blood test is a medical procedure where a sample of a person's blood is taken (called a blood draw) and sent to a lab for analysis. Knowing the results of blood tests helps a physician better ...

A blood osmolality test measures the blood for the concentration of certain dissolved particles. This test can show whether a person has an irregular balance of fluids in their body. Osmolality tests ...

People may prefer to get screened for colorectal cancer with a blood test rather than a colonoscopy. But more than twice as many colorectal cancer deaths would occur with blood-based screening as with ...

Researchers found that blood samples collected at home and mailed in can reliably track early Alzheimer’s-related brain ...

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

A personalized blood test known as a circulating tumor DNA (ctDNA) test—which detects tiny fragments of cancer DNA ...

There are indications that a simple finger-prick blood test could, in the future, detect Alzheimer's disease long before the ...