During development, the researchers are trying to get a working test for sepsis; but there is no single test for sepsis, it is a complex diagnosis based on the results of a lot of different observations and tests.
When you take a drop of blood, there is not blood all over the place, like in the hotel.
During the scene where Elizabeth is out on Larry Ellison's yacht, the San Francisco skyline can be seen in the background including the Salesforce Tower. This scene is supposed to take place in 2006-2007. Construction on the tower began in 2013.
A printout of a Theranos patent dated September 27, 2007 is revealed when Elizabeth is clearing a table to eat lunch. The scene takes place in 2006.