An eGFR blood test is used whenever there is suspicion of a kidney disease. This is usually the case in patients who are suffering from diabetes or from hypertension for a prolonged period of time.
In the case that your APP file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit APP file extensions. If your PC opens the APP file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating APP file extensions with the wrong software program.
In desktop and electronic publishing, PostScript or PS is used. PS is a programming language and is known as a page description language. This language has a file extension of .ps.Opening a .ps file is quite easy. To open a .ps file, use PDF creator which can convert the file into PDF format. Alternatively, there are interpreters like Ghotscript Viewer. This is a free software that enables PostScript files to be opened.