a while back I posted re scanning now at 21 days and how I thought it was to early... friend has just enquired re her bitch same scanner ..its back to 28 day ..!! I wonder why? :)

I think it is just in order to get the best picture. We get our girls scanned by a gp who breeds boxers so she is brilliant at scanning. She allways says 28 days and we have allways got a good clear picture