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Blood Sciences

Blood Test Information

Calcium Clearance : Creatinine Clearance Ratio (CCCR, 24h urine & paired serum)
24 Hour Urine (no Preservative)(Phone (82)4712 to order)

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Test Code: CCC

Special instructions
A serum sample for calcium and creatinine must be collected within 24-48 hours of the urine collection.

Tube type
Plain 24hr urine with paired serum sample

CCCR Interpretation
This test is used to exclude familial hypocalciuric hypercalcaemia (FHH, a rare genetic disorder, which is usually asymptomatic) as a potential cause of hypercalcaemia.

<0.01: possible FHH. Consider referral to endocrine for genetic confirmation.
>0.01 - <0.02: borderline ratio, FHH is unlikely but consider repeat.
>0.02: FHH is excluded.

Turnaround Time
2 days

Department: Biochemistry

» Patient instructions for 24 hour urine collection for this test


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