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🧪 What is Spot Urinary Urea?

The Spot Urinary Urea test measures the concentration of urea in a single urine sample collected at any time (not over 24 hours). Urea is a waste product formed from protein metabolism and excreted by the kidneys. This test helps evaluate kidney function, protein metabolism, and hydration status.

❓ Why is the Test Done?

To:

Assess renal function and urinary excretion of nitrogen waste
Evaluate protein intake and catabolic states
Monitor hydration status
Support diagnosis of renal impairment or kidney diseases

📊 Normal Reference Range

Spot Urinary Urea	Typical Range
Variable; depends on diet, hydration, and kidney function; often reported in mg/dL or mmol/L

Note: Exact reference ranges vary by laboratory and method.

📈 Interpretation of Results

Result	Clinical Significance
High urinary urea	High protein intake, catabolic states, or good renal clearance
Low urinary urea	Low protein intake, malnutrition, or impaired renal function

🧠 Associated Conditions

Condition	Details
Renal disease	May reduce urea excretion
Malnutrition	Low protein intake leads to low urea production
Catabolic states	Increased protein breakdown increases urea
Dehydration	Concentrates urine, increasing urea concentration

🔄 Related / Follow-Up Tests

Serum urea
Serum creatinine
24-hour urinary urea
Nitrogen balance studies

✅ Fasting Required?

Test	Fasting Required
Spot Urinary Urea	❌ No

📝 Summary Table

Parameter	Details
What	Measures urea concentration in a single urine sample
Why	Evaluate kidney function, protein metabolism, hydration
Normal Range	Variable; depends on diet and hydration
High Levels	High protein intake, catabolism, good kidney clearance
Low Levels	Malnutrition, renal impairment
Associated Conditions	Kidney disease, malnutrition, catabolic states
Follow-up Tests	Serum urea, creatinine, 24-hour urinary urea
Fasting Required	❌ No

Urinary Urea Spot

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