24 Hours Urinary Calcium

The 24-Hour Urinary Calcium Test is a laboratory investigation that measures the total amount of calcium excreted through urine over a 24-hour period.

Calcium plays an essential role in maintaining strong bones and teeth, supporting muscle function and normal nerve signalling. This test helps evaluate calcium metabolism and may assist in investigating kidney stones and certain bone or parathyroid-related conditions.

What Does This Test Check?

• Total calcium excretion over 24 hours

• High urinary calcium levels (Hypercalciuria)

• Low urinary calcium levels (Hypocalciuria)

• Calcium metabolism abnormalities

Sample Requirements

• Sample Type: 24-Hour Urine

• Collection Period: Complete 24-hour urine sample

• Test Category: Laboratory – Biochemistry

Patient Preparation

• Follow your doctor's instructions regarding diet and calcium supplements.

• Inform your healthcare provider about any medications you are taking.

• Use the laboratory-provided urine collection container.

• Follow the laboratory's storage and transportation instructions.

24-Hour Urine Collection Instructions

1. Day 1 – Morning: Empty your bladder into the toilet after waking up. Do not collect this first urine. Record the exact time.

2. During the Next 24 Hours: Collect all urine passed during the day and night.

3. Day 2 – Morning: Collect the final urine sample at exactly the same time as the previous day's starting time.

4. Storage: Store the sample according to laboratory instructions.

5. Submission: Deliver the complete collection to the laboratory as instructed.

Relevant Conditions

• Hypercalciuria

• Kidney Stone Evaluation

• Calcium Metabolism Disorders

• Certain Bone and Parathyroid Disorders

Important Information

Results should be interpreted by a qualified healthcare professional alongside medical history and other relevant investigations.

Please confirm test availability and sample collection requirements with the laboratory before booking.