If i had a nephrectomy due to renal dysplasia, but was told my remaining kidney was healthy, how often should i get my kidney checked?

Every 6-12months: Even if other kidney is normal and has normal kidney functions, it is better to be under the care of nephrologist or at least family physician every 6-12 months.

Infrequently: Other kidney is normal + likely has compensatory hypertrophy, meaning that overall kidney function is probably normal. Dysplastic kidney was non-fuctional from birth so remaining kidney will be larger than normal + always provided funtion that 2 kidneys would deliver. Avoid added salt in diet + xs animal protein. Annual blood pressure check + biannual blood creatinine level suffice. Prognosis good.

Infrequently: Prognosis for normal health + life span is excellent. Solitary remaining kidney will provided more function than you need as has undergone so called compensatory hypertrophy. Avoui xs animal protein or added salt in diet. (good advice for everyone) annual blood pressure check and biannual blood creatinine check should more than suffice and can be performed by your primary health care physician.