Wait. This is a totally new idea, right?
What if the lipid signatures were just as valid? Then you'd have a complementary technology. Okay -- so the idea isn't totally new -- Goodlett lab has been working on it for at least a few years and last year produced this open access paper on it I appear to have missed.
The cool part about this new paper is that they figured out how to make this work fast! Like hospital friendly level fast!