How do the Kidneys Work?
May 14, 2026
How do the Kidneys Work? The kidneys are often the unsung heroes of the human body. While the heart and lungs get most of the glory, these two bean-shaped organs, each about the size of a large ...
Preparing for a kidney-related appointment can feel overwhelming, especially since the data (like GFR and ACR) can be technical.
Here is a list of targeted questions divided by category. You can print these out or copy them into your notes to keep the conversation focused and productive.
“What is my current GFR, and how does it compare to my last three results?” (This helps you see the trend rather than just a snapshot).
“What was my latest ACR (Urine Albumin-to-Creatinine Ratio)?” (This measures protein leakage; a high number can be more telling than GFR alone).
“What is the specific cause of my CKD?” (Is it diabetes, an autoimmune issue, anothet diagnosis or an age-related decline?)
“Are any of my current medications—prescribed or over-the-counter (OTC)—potentially nephrotoxic (hard on the kidneys)?
“Is my blood pressure currently at the target level for someone with CKD?” (Usually, the goal is lower than the general population, below 130/80 mmHg).
“Should I be on an SGLT2 inhibitor or an ACE/ARB?” (These are specific classes of drugs often used to protect kidney function).
“Do I need to limit my intake of protein, potassium, or phosphate yet?” (Many people restrict these too early; it’s best to wait until your blood work shows you actually need to).
“What is a safe daily sodium (salt) limit for me?”
“Are there specific exercises I should avoid, or is staying active generally encouraged?”
“What are the “red flag” symptoms I should look out for that would require a rapid call to you?” “If so, how can I contact you?”
“Based on my current trend, what is the long-term outlook for my kidney function?” “Specifically am I heading for dialysis? If so, when?”
“When is my next blood and urine test, and what levels should I be converned about? “
Doctors often use a lot of jargon. If they say something like “Your creatinine is slightly elevated,” don’t be afraid to ask:
“In plain English, does that mean my kidney function has stayed the same or declined since last time?”
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