Questions to Ask Your Kidney Doctor
Questions for an appointment about reduced kidney function, covering your lab numbers, the cause, medication safety, diet and blood pressure targets, when to call, and what happens if function keeps declining. Written for patients seeing a primary care doctor or a nephrologist.
The questions
Open any question for the note
What is my eGFR and creatinine right now, and how do they compare with my results a year ago?
Why ask it
Kidney function is read as a trend, not a snapshot. A single eGFR can be thrown off by dehydration, a recent illness, or a big protein meal, so the number that matters is the direction across several draws. Ask for the actual figures rather than a word like fine.
What stage of kidney disease does that put me in?
Why ask it
Stage drives everything downstream: how often you get tested, which drugs need dose changes, whether a referral is warranted. Stage 3 spans a wide range and is often split into 3a and 3b, so ask which side of it you are on.
Do we know what is causing the damage to my kidneys?
Why ask it
Diabetes, long-standing high blood pressure, an autoimmune condition, a blockage, and a drug reaction are all managed differently, and some are reversible. If the cause is unclear, ask what would settle it, such as an ultrasound, a urine protein test, or a biopsy.
Is my kidney function stable at the moment, or is it declining, and how quickly?
Why ask it
Slow decline over decades and rapid loss over months lead to very different plans. A doctor who will not estimate a rate may not have enough data points yet, which itself tells you the next step is more monitoring rather than more treatment.
Is there protein or blood in my urine, and what does that tell you?
Why ask it
Protein in the urine often shows damage earlier than a falling eGFR does, and it is one of the strongest signals for how aggressively to treat. Ask for the albumin to creatinine ratio by number so you can compare it at the next visit.
How often should my kidney function be rechecked, and who orders those tests?
Why ask it
This is where care quietly falls through the gap between a specialist and a primary care office, with each assuming the other is ordering the labs. Leave with an interval and a name.
What should I do or avoid in the days before a blood or urine test?
Why ask it
Heavy exercise, a high protein meal, some supplements, and being short on fluids can move results enough to look like a change in your disease. Knowing the prep keeps you from chasing a number that was never real.
Which of my prescriptions and supplements need a dose change or need to stop because of my kidney function?
Why ask it
Many common drugs are cleared by the kidneys and need lower doses as function drops, and some herbal supplements are best avoided entirely. Bring every bottle, including anything you take occasionally, because a list from memory usually misses two or three.
Which over-the-counter painkillers are safe for me?
Why ask it
The distinction between anti-inflammatory painkillers and other options matters here, and it applies to cold and flu combination products too, where the ingredient is buried on the back of the box. Ask what to use instead, not just what to avoid.
What blood pressure number are we aiming for, and how often should I check it at home?
Why ask it
Blood pressure control does more to protect remaining function than almost anything else you can do day to day, and targets differ depending on protein in the urine. A target with no home monitoring plan attached is hard to act on.
How should my diabetes or blood pressure treatment change now?
Why ask it
Some drug classes protect the kidneys and others become risky as function falls, so a new eGFR often means a real change to the regimen rather than a note in the chart. Ask which of your medicines is doing the protecting, so you know what not to skip.
How much salt, protein, potassium, and phosphorus should I be getting each day?
Why ask it
General kidney diet advice online is often aimed at people on dialysis and can be wrong, sometimes harmfully so, for earlier stages. You want limits for your stage and your labs, in units you can actually count.
Can you refer me to a dietitian who works with kidney patients?
Why ask it
Translating potassium and phosphorus limits into meals is specialist work, and a renal dietitian is usually covered when a doctor refers. If the answer is that you do not need one yet, ask what would change that.
How much fluid should I drink in a day, and can too much be a problem for me?
Why ask it
The advice to drink plenty is not universal here: with reduced function or heart involvement, extra fluid can cause swelling and breathlessness. Ask for a rough daily amount and what signs mean you have had too much.
Which symptoms mean I should call the office, and which mean I should go to the emergency room?
Why ask it
Reduced urine output, swelling in the legs or face, breathlessness lying down, and confusion sit on different sides of that line. Getting the split in advance saves you from either waiting too long or spending a night in an emergency department for something that could wait.
Should I be seeing a nephrologist, or can my primary care doctor manage this?
Why ask it
There are recognised thresholds for referral based on eGFR, protein in the urine, and rate of decline. If the answer is not yet, ask which number would trigger it, so you can watch for it in your own results.
If my kidney function keeps declining, at what point would we start talking about dialysis or a transplant?
Why ask it
Asking early is not pessimism, it is scheduling. Planning ahead of a crisis avoids emergency dialysis through a temporary neck catheter, which carries more risk than access placed in advance.
If a transplant is a possibility for me, when does the evaluation usually start?
Why ask it
Evaluation and waiting can take a long time, and referral often happens well before dialysis begins. The answer also tells you what would rule you out, which is worth knowing while some of it may still be modifiable.
Are there newer treatments or trials for my type of kidney disease that I should ask about?
Why ask it
Treatment for several kidney conditions has changed in recent years, and whether a given drug applies depends on the cause and your other conditions. A specific answer about your diagnosis is more useful than a general reassurance that things are improving.
Who do I contact between appointments, and how long does a reply usually take?
Why ask it
Kidney care runs on results that arrive between visits, and you will need to ask about at least one of them. Knowing whether to use a portal message, a nurse line, or the front desk, and the realistic wait, prevents a worrying result sitting unread for weeks.
Getting the most out of a kidney appointment
Practical guidance for the conversation itself
What to bring
- Every medicine bottle, including over-the-counter painkillers, antacids, vitamins, and herbal supplements
- Your home blood pressure readings, with dates, if you take them
- Your last set of labs if they were drawn somewhere else, or the name of the lab
- A written list of your questions, with the two you most want answered marked at the top
- Someone to take notes, or your phone set to record if the clinician agrees
During the appointment
Ask for numbers, not adjectives
Stable, mild, and a bit low are not trackable. An eGFR, an albumin to creatinine ratio, and a blood pressure target give you something to compare at the next visit and something to act on in between.
Say the two questions you care about most first
Appointments run short and often end on the clinician's agenda rather than yours. Naming your priorities in the first minute is the single most reliable way to get them covered.
Read the plan back before you leave
Repeat what you understood: which medicine changed, which test comes next, when, and who orders it. Mistakes surface at this point far more often than most people expect.
Ask what would change the plan
Rather than only asking what happens now, ask which result or symptom would prompt a different decision. That turns a static plan into something you can help monitor.
Common pitfalls
Assuming no symptoms means no progression
Reduced kidney function is often silent until it is advanced. The lab schedule, not how you feel, is what tracks it, so keep the tests even in a good stretch.
Taking diet rules from the wrong stage
Much of the kidney diet advice in circulation is written for people on dialysis and can conflict with what is right earlier on. Check any restriction against your own stage and labs before you adopt it.
Leaving a medicine off the list
Occasional ibuprofen, a supplement someone recommended, and anything prescribed by another specialist all count. These are among the most common avoidable causes of a sudden drop in function.
Not asking about access before you need it
If dialysis is a possibility later, the veins in one arm may need protecting from routine blood draws and lines. This is worth raising well before anyone is planning treatment.