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 multiple sleep latency test (MSLT), also known as a daytime nap opportunity study, is a sleep study that measures excessive daytime sleepiness. The test evaluates how fast you fall asleep in a quiet ...

Multi-cancer early detection tests (MCEDs), sometimes called liquid biopsy tests, are a new method of detecting cancer early. While the concept is promising, these untested tests currently pose ...

What causes multiple miscarriages isn’t limited to just one reason. There are a variety of factors involved. The parent may repeatedly pass on an abnormal chromosome, causing recurrent miscarriage.