Home health trackers are currently most or less limited to recording your activity level and tracking your weight. A device called Cue is changing the game by taking actual biological measurements using biofluids like blood or saliva. The Cue’s microfluidic system and bio-sensors can give you a much more complete picture of your overall health than any other health tracker.

Cue tracks five different aspects of your body’s health: inflammation, influenza, testosterone, fertility, and Vitamin D. There are separate cartridges for each health metric; you place a biological sample on a Sample Wand and insert it into the appropriate cartridge, which is enclosed in the larger Bluetooth-enabled Cue box.

The box analyzes the sample and sends the results straight to the Cue smartphone app. The app tracks changes in the health metrics over time, giving you a clear picture of whether you are getting enough Vitamin D, telling you when you’re ovulating, or helping you figure out whether you have a cold or the flu.

You can test yourself as often as you want, which will no doubt be a huge help to some people who previously only had access to these tests through expensive doctor visits. Of course, the Cue involves a substantial initial investment: it is available at a pre-launch price of $199. That price will go up to $300 when it launches in Spring 2015. Additional Sample Wands, cartridges, and a carrying case will also be available post-launch.