Whoop opens blood-testing service to what it says is a 350,000-person waitlist

Fitness band maker Whoop formally opened Whoop Advanced Labs for business on Tuesday. Some 350,000 people were on the waiting list after the service was previewed in May, the company told TechCrunch.

Whoop Advanced Labs offers health-screening blood tests from Quest Diagnostics that cover a variety of markers from calcium to white blood cells. The platform integrates those results with the band’s continuous monitoring of activity, sleep, respiratory rate, and blood pressure to offer more personalized wellness advice.

Advance Labs costs $199 for one annual test, $349 for two, or $599 for four per year. The Whoop device itself is also a membership ranging from $200 to $350 annually depending on the wearable strap’s features.

Whoop joins a growing number of startups offering wellness through lower-cost, out-of-pocket blood screenings on a subscription basis. Others include Dr. Mark Hymen’s Function Health, which costs $500 a year for tests at three-month intervals, plus optional body imaging, and Fountain Life, the longevity startup from Tony Robbins and Peter Diamandis, which costs more than $20,000 a year.