ScienceWhat can a blood test reveal?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience08/03/2017August 3, 2017A blood test can indicate a range of very different diseases. That's why the doctor often requests a blood profile as the first step. We asked what it reveals exactly, and how the analysis works.https://p.dw.com/p/2hEJOAdvertisement