Is this normal results for 24hour urine catch? 1655 f (2)alpha, ur conc; 24 ur duration;397 volume;657 alpha, ur (ng/24h)

Need more data. Are you looking for systemic mast cell disease and have values for11 beta-prostaglandin f2 Alpha in urine (i am unsure from your post). If this is the case your levels are elevated. If this is not the case your need to provide more information. The urine volume is very low and may represent an under collection.
I can't tell. Each lab has different "normal" values. Look on the lab results page. Beside each result there should be a range of normal values. See if your result is within that range. I hope that helps!