Renal Replacement Therapy (RRT) Discontinuation Evaluation
This test helps determine if your kidneys can handle daily functions without ongoing dialysis or RRT support, based on your current health status and lab results.
Assesses kidney function readiness to stop dialysis support.
Key facts at a glance
- LOINC
- 68350-8
- Short code
- DISCONTINUATIONRENALREPLACEMENTTHERAPYREQUESTOFPATIENTORFAMILY
- Synonyms
- —
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters
Your healthcare team may request this evaluation if you’re considering stopping dialysis or RRT. It ensures your kidneys are stable enough to manage without external support, balancing safety and independence. Results help guide decisions about continuing or adjusting treatment plans.
What to Expect Before the Test
No special preparation is needed. Blood or urine samples may be collected to check kidney function markers, fluid balance, and electrolyte levels. Your provider will explain the process and any restrictions (e.g., fasting for blood tests).
What the Test Measures
This evaluation typically includes blood tests to assess kidney function (e.g., creatinine clearance, electrolytes) and urine tests to check for signs of kidney damage or fluid overload. Some labs may also measure markers like potassium, sodium, or phosphorus to ensure stability.
What the Results Mean
Results help determine if your kidneys can safely function without RRT. If levels are stable and within expected ranges, it may support stopping dialysis. If levels are abnormal, ongoing support may be needed to prevent complications like fluid overload or electrolyte imbalances.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is critical for patients on long-term RRT, as discontinuing therapy requires careful monitoring to avoid life-threatening complications. Results guide shared decisions between patients and providers about treatment duration, lifestyle adjustments, or alternative support strategies. It also helps identify risks for recurrence of kidney failure or related conditions.
Short name
RRT Discontinuation Check
Frequently asked questions
What does a positive result mean?
How long does it take to get results?
Can I stop RRT without 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