Renal dietitian consult pre-end-stage renal disease (ESRD) metabolic and electrolyte assessment panel
This test involves a series of blood and urine tests to evaluate how your kidneys are managing key nutrients, fluids, and waste products before starting ESRD therapy.
These tests help your dietitian tailor your diet to support kidney function and prevent complications before dialysis begins.
Key facts at a glance
- LOINC
- 67887-0
- Short code
- RDPCK
- Synonyms
- —
- Category
- chemistry
- Sample
- serum
- Container
- Not applicable - clinical assessment
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 18 years
- Method
- Clinical assessment and dietary evaluation
- Specimen volume
- Not applicable
- Stability
- Not applicable
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 24–72 hours
- Order
- routine
What This Test Measures
Your blood will be drawn to check levels of electrolytes like sodium, potassium, and phosphorus, which are critical for nerve and muscle function and bone health. Kidney function is indirectly assessed through markers like creatinine and blood urea nitrogen (BUN).
Fluid and Waste Balance
Urine samples will be collected to measure protein excretion, which can indicate kidney damage or protein loss. Other urine tests may check for waste products like urea or creatinine to confirm how well your kidneys are filtering blood.
Nutrient and Acid-Base Status
Blood tests may also evaluate blood sugar (glucose), calcium, and other minerals to ensure your diet supports overall metabolic health. Acid-base balance, which affects how well your body uses energy, may also be assessed.
Why It Matters for ESRD Prep
These tests help identify imbalances early so your dietitian can adjust your diet to prevent complications like high blood pressure, bone disease, or fluid overload, which are common in people with advanced kidney disease.
Reference range
Assessment-based; no numeric reference range applicable. Renal dietitian evaluates nutritional status, electrolyte balance, and dietary adherence prior to ESRD therapy initiation.N/A
No fasting required. Patient should bring recent laboratory results, current medication list, and a 3-day dietary food diary if available.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This panel is critical before starting ESRD therapy because it provides a baseline to monitor how well your kidneys are functioning and to guide dietary adjustments that can improve quality of life and reduce risks of complications during dialysis or transplant.
Frequently asked questions
Why do I need these tests before starting ESRD therapy?
What does each test measure?
Can I eat normally before these tests?
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