You can identify quite a few pathogens with Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy. I think the machines for that are smaller and

You can identify quite a few pathogens with Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy. I think the machines for that are smaller and cheaper than mass spec machines. see https://pmc.ncbi.nlm.nih.gov/articles/PMC5631018/ https://pmc.ncbi.nlm.nih.gov/articles/PMC5631018/ , and this company that is commercialising it https://microbira.com/ https://microbira.com/