Theranos is the biggest healthcare startup to fail in recent years, but it's not alone. Here are 9 others that have flamed out.

Not every healthcare startup that manages to raise tens or hundreds of millions ends up working out, for one reason or another. Theranos, Drugstore.com, and sleep-tracker Hello are among the healthcare startups that have closed down in the past five years. Here are 10 of the biggest healthcare startups that haven't panned out in the past few years, as highlighted by CB Insights.When Theranos, the beleaguered blood-testing company that's now the subject of a book, documentaries, and a podcast, closed its doors in 2018, it joined a crop of healthcare startups that ultimately didn't live up to investors' lofty expectations. While none had the spectacular fall from grace that Theranos had, healthcare startups that raised tens of millions or even hundreds of millions from investors in the past five years have ultimately decided to close their doors for one reason or another. Here are 10 of the biggest healthcare startups that haven't panned out in the past few years, as highlighted by CB Insights.