Wannabe vampires, beware: The US Food and Drug Administration warned Tuesday against using plasma infusions from young blood donors to ward off the effects of normal aging as well as other more serious conditions. Plasma, the liquid portion of the blood, contains proteins that help clot blood.
Researchers say a simple blood test can finds signs of brain damage in people on the path to getting Alzeheimer's disease before they have any symptoms.
Australian researchers have developed an experimental blood test they say is the first blood test capable of detecting melanoma -- an aggressive form of skin cancer -- in its early stages with a high degree of accuracy.
Promising new research enables scientists to use a blood test to screen for different types of cancers at early stages.
Theranos went from one of the most lauded "unicorn" tech startups in Silicon Valley to a company crippled by scandal.