Many options. Electrical activity during afib needs to be recorded for official diagnosis. Standard ecg, or longer tests such as holter monitor (24-48 hrs), zio patch (14 days), event recorder/mcat (up to 30days) or even an implantable loop recorded (3+ years). There needs to be a poorly defined, irregular rhythm from the top of the heart. For more information check out www.Heart.Org.
Holter. Usualmente suspected with symptoms of palpitations, shortness of breath dizziness. A plain ekg can make the diagnosis but if it comes and goes a holter may be needed. There is a new attachment to iphone that looks like a case and can show your rhythm , needs to be prescribed and interpreted by a doctor , though.
Hah. Name all tests and criteria, eh? I think you're over-reaching. Afib is a simple diagnosis to make in most cases. A single ekg, or even a rhythm strip is usually sufficient. The lower chamber beats are markedly varied in their timing, and there's no clear organized rhythm of the top chamber visible on the strip/ekg. The end. :) every one in a while it's weirder than that, but not often.