What is the purpose of this test?
The Potassium Urine Test, 24-Houris used to measure the amount of potassium your body removes through urine over a full day. Potassium is a vital mineral that helps control muscle function, nerve signals, and fluid balance. Too much or too little potassium in your urine can be a sign of kidney problems, adrenal gland disorders, or imbalances caused by medications such as diuretics. By collecting your urine over 24 hours, this test gives a more accurate view of your body’s potassium regulation than a single urine sample.
This 24-hour potassium urine testis often ordered when doctors suspect issues such as hypokalemia (low blood potassium) or hyperkalemia (high blood potassium) may be caused by abnormal potassium loss in urine. It also helps monitor how well your kidneys are functioning and whether they are properly managing potassium levels. This is especially important for people with high blood pressure, heart problems, or those taking medications that affect electrolyte balance.
Who should get this test?
The Potassium Urine Test, 24-Hour may benefit the following individuals:
- People with symptoms of potassium imbalance, such as muscle cramps or weakness
- Individuals with high blood pressure or heart conditions
- People with kidney or adrenal gland disorders
- Individuals taking diuretics or other medications that may affect electrolyte levels
- Those with unexplained fatigue, irregular heartbeat, or numbness
- People being treated for hypokalemia or hyperkalemia
- Anyone whose doctor recommends monitoring potassium loss through urine
When should I order the Potassium Urine Test, 24-Hour?
Individuals may consider ordering this test if they have symptoms or exposure concerns related to potassium imbalance.
Symptoms to consider:
- Muscle cramps, spasms, or weakness that doesn't improve
- Irregular heartbeat or palpitations
- Fatigue or feelings of low energy
- Frequent urination or excessive thirst
- Tingling or numbness in hands, arms, or legs
- Nausea, constipation, or stomach discomfort
If you have these symptoms or suspect a potassium imbalance, the Potassium Urine Test, 24-Hour can provide useful information to guide you and your doctor in managing your electrolyte levels and overall health.
LC Sample ReportQD Sample ReportTest Code(s):
003186, 11316
Also Known As: K, 24-Hour Urine
Preparation:Bring your lab order to the lab to receive the correct specimen container before starting collection. On the first day, urinate at 8 a.m. and discard that sample. Then collect all urine for the next 24 hours, including the final sample at 8 a.m. the following morning. Keep the container refrigerated or in a cool place between collections. Ensure the lid is tightly sealed and deliver the specimen to the lab promptly. Label the container with your full name, and the exact start and end dates and times of the collection
Test Results:
2-3 days. May take longer based on weather, holiday, or lab delays.
