Urinary Electrolytes Spot
Report in 24Hrs
At Home
Details
Assesses sodium, potassium, chloride, and bicarbonate; vital in fluid balance and acid-base disorders.
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🧪 What is Spot Urinary Electrolytes?
The Spot Urinary Electrolytes test measures concentrations of key electrolytes—such as sodium (Na⁺), potassium (K⁺), chloride (Cl⁻), calcium (Ca²⁺), and sometimes magnesium (Mg²⁺)—in a single urine sample collected at any time (not over 24 hours). It helps evaluate kidney function, electrolyte balance, and fluid status.
❓ Why is the Test Done?
To:
- Assess electrolyte balance and diagnose disturbances (e.g., hyponatremia, hypokalemia)
- Evaluate causes of edema, hypertension, or dehydration
- Monitor patients with renal diseases, heart failure, or adrenal disorders
- Guide treatment in electrolyte imbalances and acid-base disorders
📊 Normal Reference Ranges (typical values; may vary by lab)
Electrolyte | Spot Urine Concentration (approximate) |
|---|---|
Sodium (Na⁺) | 40 – 220 mEq/L (varies widely with diet and hydration) |
Potassium (K⁺) | 25 – 125 mEq/L |
Chloride (Cl⁻) | 110 – 250 mEq/L |
Calcium (Ca²⁺) | 100 – 300 mg/L |
Magnesium (Mg²⁺) | 5 – 30 mg/L |
📈 Interpretation of Results
Electrolyte Level | Possible Clinical Implications |
|---|---|
High urinary sodium | High salt intake, diuretics, renal salt wasting |
Low urinary sodium | Volume depletion, dehydration, heart failure |
High urinary potassium | Diuretic use, hyperaldosteronism, renal tubular acidosis |
Low urinary potassium | Hypokalemia due to gastrointestinal loss |
Abnormal calcium/magnesium | Kidney stones, metabolic bone disease, electrolyte disorders |
🧠 Associated Conditions
Condition | Details |
|---|---|
Acute/chronic kidney disease | Altered electrolyte excretion patterns |
Heart failure | Fluid retention affects sodium excretion |
Adrenal disorders | Hyperaldosteronism changes sodium and potassium levels |
Electrolyte imbalances | Causes of hypo/hypernatremia, hypo/hyperkalemia |
🔄 Related / Follow-Up Tests
- Serum electrolytes
- 24-hour urinary electrolytes
- Renal function tests
- Hormonal assays (aldosterone, renin)
- Acid-base studies
✅ Fasting Required?
Test | Fasting Required |
|---|---|
Spot Urinary Electrolytes | ❌ No |
📝 Summary Table
Parameter | Details |
|---|---|
What | Measures key electrolytes in a single urine sample |
Why | Evaluate electrolyte and fluid balance disorders |
Normal Ranges | Variable; depends on hydration, diet, and medications |
High/Low Levels | Indicative of various renal, cardiac, or endocrine disorders |
Associated Conditions | Kidney disease, heart failure, adrenal disorders |
Follow-up Tests | Serum electrolytes, 24-hr urine electrolytes, renal function |
Fasting Required | ❌ No |
How our test process works!
