Human Longevity, Inc.
Human Longevity Inc. (HLI) is a genomic life-extension company based in California.    It was co-founded by J. Craig Venter, who led one of the first teams to sequence the human genome.        The company offers medical test packages, which include genome sequencing and MRI, that as of 2017 cost between $2,500 and $25,000 USD.     
While it is conducting research, the company is offering a wellness service known as "Health Nucleus", which offers customers a range of medical tests such as a full genome sequencing and tests for early indications of cancers, Alzheimer's and heart disease.  This testing is meant to help people catch diseases earlier than otherwise possible and to identify risk factors for diseases later in life. 
At the start of 2017 the company hired Cynthia Collins from GE Healthcare, and Venter became Executive Chair. The company's chief operating office, Mark Winham, left the company in mid-2017, and Collins and the company's chief medical officer, Brad Perkins, left in December of that year in 2017. Venter stepped back into the CEO role, but announced in May 2018 that he was leaving the company to return to the J. Craig Venter Institute.