New Delhi, Oct. 16 -- Elizabeth Holmes was once celebrated as one of Silicon Valley's most promising entrepreneurs.

She founded Theranos, a healthcare technology company that claimed it could transform blood testing by detecting medical conditions using just a few drops of blood.

The promise attracted powerful investors and helped turn Holmes into a symbol of innovation. But the technology failed to deliver on its claims, leading to a corporate collapse, criminal charges and a prison sentence.

Born in 1984, Holmes left Stanford University to establish Theranos in 2003. Her central promise was simple: make blood testing less invasive, quicker and more accessible by using tiny samples collected from a finger prick.

The proposition attra...