24-hour urine

How to actually get a 24-hour urine test

A 24-hour urine collection is the standard test for working out why you form stones. Plenty of people never get offered one. Here are the three routes to getting it done, and a letter you can hand your doctor so you do not have to find the words in the room.

First, the thing nobody tells you

Treating a stone and preventing the next one are two different appointments. Emergency care removes the stone in front of you; nobody in that room is responsible for the one that comes next. If you have never been asked to collect your urine for a day, it is not usually because someone decided you did not need it — it is because prevention was never anyone’s job.

Which means asking is not being difficult. It is the normal way this gets started.

Three routes

Ordered by how likely insurance is to cover it

Route 1

Ask the urologist who treated you

The most direct route, and the one most likely to be covered by insurance. If you have seen a urologist for a stone, they can order the collection.

Best if

Anyone who has been treated for a stone in the last couple of years and still has a point of contact.

How it goes

  1. Call the practice and say you want to discuss preventing another stone, not treating a current one — these are booked differently.
  2. Ask directly whether the doctor performs metabolic stone evaluations. If the answer is no, ask for a referral to someone who does.
  3. At the appointment, ask for a 24-hour urine collection and, if you still have a stone, for it to be sent for composition analysis.
  4. The kit is usually mailed to your home. You collect for a full 24 hours and ship it back.

Cost

Usually billed to insurance as a diagnostic test. Ask about your deductible.

Timeline

Two to six weeks from call to results, mostly waiting for an appointment.

The catch

Not every urologist does prevention work. Many focus on removing stones. Asking on the phone first saves you a copay finding out.

Route 2

Ask your primary care doctor

Primary care physicians can order a 24-hour urine collection. Many will, if you ask specifically and explain why.

Best if

People with no urologist relationship, or a long wait for one. Also the cheaper route if your insurance requires a referral anyway.

How it goes

  1. Book a regular appointment and put kidney stone prevention on the agenda when you book, so it is not squeezed into the last two minutes.
  2. Bring a written request — use the letter below. It gives your doctor the specific test name and the reason, which is most of what they need.
  3. Ask for the stone-risk panel specifically, not a general urinalysis. They are different tests.
  4. If your doctor is unsure, ask them to refer you to a urologist or a nephrologist who handles stone disease.

Cost

Usually billed to insurance. Often cheaper than a specialist visit.

Timeline

One to four weeks.

The catch

A general urinalysis is not the same as a 24-hour collection. Be specific or you may be handed the wrong test.

Route 3

Order it yourself, without a doctor

Several laboratories sell 24-hour urine stone panels directly to consumers. A physician in the laboratory's network writes the order, so you do not need your own doctor to agree.

Best if

People who cannot get an appointment, have no insurance, or have been refused. Also anyone who simply wants the data now.

How it goes

  1. Check whether direct-to-consumer lab ordering is permitted in your state — the rules vary and a few states restrict it.
  2. Order a 24-hour urine stone risk panel. It goes by different names at different laboratories.
  3. Collect at home over a full 24 hours and ship the sample back.
  4. Results come to you. Bring them to a clinician — this route gets you the numbers, not the conversation.

Cost

Cash pay, typically a few hundred dollars. Not usually reimbursable.

Timeline

One to three weeks, with no appointment to wait for.

The catch

You get results with nobody to discuss them with. That is the gap this site's organiser is built to close, but it is not a substitute for a clinician.

On route 3: direct-to-consumer lab ordering is regulated state by state and the rules change. We are compiling a verified state-by-state table and will publish it with the statute and the date each entry was checked. Until then, check your own state rather than relying on a guess from us.

The part people find hardest

A letter you can hand to your doctor

Most people know what they want and lose it somewhere between the waiting room and the seven minutes they actually get. This builds a one-page request from your own stone history — what you have had, what was found, what you have already tried — and prints it. Hand it over, or email it ahead so it is in the notes before you arrive.

It stays on your device. Nothing you type is sent to us or stored anywhere but your own browser.

Build my request letter

This page describes how testing is arranged in the US. It is not medical advice and not a recommendation that you should have any particular test — that is a decision for you and your clinician. We receive no payment from any laboratory and link to none.