What are the symptoms of kidney failure?

I have a kidney transplant for 26 yrs. so far but my blood pressure has been a little bit up like 110/90 but it's always been this way. My cholesterol has been going up but my doctor say it's because I've been taking Prednizone all my life. Out of curiosity, I just want to know what is the most that a kidney can last. I have my mom's kidney because I have no sibblings.

According to statistics, by 10 to 15 years, about 50% of transplanted kidneys are still functional. Rates improve if the kidney comes from a living relative.
The signs and symptoms of kidney failure vary, depending on whether the failure is acute or chronic.
Acute kidney failure occurs when your kidneys suddenly stop filtering waste products from your blood. The signs and symptoms may include:
Fluid retention
Bleeding, often in your stomach or intestines
Confusion
Seizures
Coma
Chronic kidney failure
According to the National Kidney Foundation, almost 20 million adult Americans have chronic kidney disease and another 20 million are at risk of developing it. Over time, chronic kidney failure can lead to congestive heart failure, weak bones, stomach ulcers and damage to the central nervous system. Unfortunately, signs and symptoms often don't appear until irreversible damage has occurred. They include:
High blood pressure
Unexplained weight loss
Anemia
Nausea or vomiting
Malaise or fatigue
Headaches that seem unrelated to any other cause
Decreased urine output
Decreased mental sharpness
Muscle twitches and cramps
Bleeding in the intestinal tract
Yellowish-brown cast to the skin
Persistent itching
Sleep disorders
End-stage renal disease

Sorry i don't know, but u could try asking the internet!!

I would assume your doctor has your health care well sorted out. But to answer your question, I seem to remember one of the signs was a need to drink lots of water. More than was normal for the person. But I don't think you would be peeing out lots of water. That would spell out something is not ok with the kidneys. But seriously it might be worthwhile to have a specialist check you out, if only just to ease your mind.

Symptoms

decreased urine output
decreased urine volume (oliguria)
no urine output (anuria)
urination, excessive at night (can occur in some types of renal failure)
ankle, feet, and leg swelling
generalized swelling, fluid retention
decrease in sensation, especially the hands or feet
decreased appetite
metallic taste in mouth
persistent hiccups
changes in mental status or mood
agitation
drowsiness, lethargy
delirium or confusion
coma
fluctuating mood
difficulty paying attention (attention deficit)
hallucinations
slow, sluggish, movements
seizures
hand tremor
nausea, vomiting
may persist for days
morning sickness
vomiting blood
prolonged bleeding, bruising easily
stools, bloody
nosebleed
growth, slow (child 0-5 years)
flank pain
fatigue
ear noise/buzzing
breath odor
breast development in males
blood pressure, high