Combining form for cyst/o 

Lith/o

-stenosis

ur/o

Ren/o

This is a hormone that is secreted by the kidneys that constricts blood vessels in order to raise blood pressure. 

Dips/o

Olig/o

Abbreviation for biopsy 

The abbreviation CRF

C & S abbreviation 

UA

-tripsy

nephrectomy

BUN

pyuria

uti

glomerulonephritis 

K+

Na+