Potassium concentration in urine (measured by turbidimetry)
This test measures how much potassium is present in your urine, which helps assess kidney function and electrolyte balance.
["Urine potassium levels can indicate kidney health and fluid/electrolyte balance."]
Key facts at a glance
- LOINC
- 94841-4
- Short code
- Potassium Ur Fetus-sCnc
- Synonyms
- Potassium Ur Fetus-sCnc
- Category
- electrolyte
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Ref low
- 3.5
- Ref high
- 5
- Critical range
- 2.5 N/A – 6.5 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 84132
- SNOMED
- 110742001
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your healthcare provider may order this test if you have symptoms like muscle cramps, irregular heartbeat, or signs of kidney problems. It can also help monitor conditions like kidney disease, heart failure, or certain medications that affect potassium levels.
What to Expect Before the Test
No special preparation is needed. You’ll likely collect a random urine sample in a clean container. If you’re taking certain medications or have specific dietary instructions, your provider may give you guidance.
What the Results Mean
Higher-than-normal levels might suggest kidney issues, excessive sweating, or certain medications. Lower-than-normal levels could indicate dehydration, low salt intake, or conditions like Addison’s disease. Results are interpreted in relation to your overall health and symptoms.
Common Conditions Monitored
This test is often used to monitor kidney function, fluid balance, and conditions like heart failure, diabetes, or metabolic disorders that affect electrolyte levels.
Reference range
Adult: 3.5-5.0 mmol/LN/A
No special preparation required. Stay well hydrated.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: Urine potassium levels can reveal kidney function and electrolyte imbalances. Elevated levels may indicate kidney problems or excessive potassium loss, while low levels could signal dehydration, poor kidney function, or certain medical conditions. Your provider will use these results alongside other tests and symptoms to guide treatment.
Short name
Urine Potassium
Frequently asked questions
What causes urine potassium levels to be too high?
What causes urine potassium levels to be too low?
How often should I get this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy