While frustrating, generally speaking, re-testing too early is only likely to return false positive results and you DON'T WANT THAT. I'm due to have a post-treatment PET-CT in two weeks, a full two months following the end of my recent treatment. Any earlier would truly be pointless, because the PET-CT *will* show 'hot' results from the residual inflammation of the treatment. You likely must simply be patient, which is really difficult, I know.

-Seth

47 yr old male non-smoker, social drinker, fit. Jan'10, Stg3 rt tonsil+rt neck SCC, HPV+, rad+chmo Vancouver Cda. 2yr clear Apr'12 London UK. Apr'13 mets recur to lymph btw left lung & aorta, 3x Cisplatin+5FUchemo+20 rad, was all clear but 6-mo PET-CT shows mets to pleura around left lung, participating in St 1 trial of GDC-0980. GDC lost effect and ended July'14, bad atrial fibrillation requiring hospitalisation, start more standard chemo 10 Sep 2014.
Sadly has passed away, notified Jan 2015.