water deprivation test Flashcards
1
Q
normal water deprivation?
A
final urine osm >600, urine osm post DDAVP >600
2
Q
psychogenic polydipsia?
A
starting plasma osm low >400 final urine osm
>400 urine osm post-DDAVP
3
Q
cranial DI?
A
starting plasma conc is high final urine osm > 300 urine osm port ddavp> 600
4
Q
nephrogenic DI?
A
high starting plasma osmolality final urine osm <300 urine osm post DDAVP <300
