You can individual files, with many malware scanner at
http://virusscan.jotti.org
E is accurate. However, in this subforum, there have been multiple thread recently regarding false positive results from malware scans.
Here is an example of a program which claims to be legitimate, but has been identified by AVG as malware.
AVG may have changed their scanner mechanism [ or the author may have changed the program's code ]. Earlier today, I downloaded OCCT. AVG IS, which includes a rootkit scanner, scanned the file after the download finished. No malware found.
RF123