Stages of Kidney Working

(GFR) - GFR stands for Glomerular Filtration Rate, which is a blood test that measures how well your kidneys filter blood.
There are 5 stages of Kidney Failure.
Stage 1: Kidney damage is mild, and the glomerular filtration rate (GFR) is above 90.
Stage 2: Kidney damage is mild, and the GFR is between 60 and 89.
Stage 3a: Kidney damage is moderate, and the GFR is between 45 and 59.
Stage 3b: Kidney damage is moderate, and the GFR is between 30 and 44.
Stage 4: Kidney damage is severe, and the GFR is between 15 and 29.
Stage 5: Kidney failure, and the GFR is below 15.

Stage-wise Symptoms

Stage 1

Most people with stage 1 chronic kidney disease (CKD) don't have any symptoms that affect their health. However, some signs that may be present include:
• High blood pressure.
• Swelling in the hands or feet.
• Urinary tract infections.
• Protein in the urine.
• Blood in the urine.
• Kidney damage that shows up on an ultrasound, CT scan, MRI, or kidney biopsy.

Stage 2

• Protein in your urine.
• High blood pressure.
• Swelling in your hands or feet.
• Urinary tract infections (UTIs).
• Blood in your urine.

Stage 3

• Feeling weak and tired.
• Swelling in your hands or feet.
• Skin that feels dry or itchy.
• Pain in your lower back.
• Muscle cramps.
• Trouble sleeping.
• Restless leg syndrome (an uncomfortable feeling in your legs that makes it hard to sit still or fall asleep).

Stage 4

• Feeling weak and tired.
• Swelling in your arms or legs.
• Urinating more or less often than normal.
• Pain in your lower back.
• Muscle cramps.
• Feeling sick to your stomach or throwing up.
• Feeling less hungry than normal.

Stage 5

• Urinating (peeing) less often than usual or not at all.
• Itchy and/or dry skin.
• Feeling tired.
• Trouble concentrating.
• Numbness or swelling in your arms, legs, ankles, or feet.
• Achy muscles or cramping.
• Shortness of breath.
• Nausea and/or vomiting.