Calcium & Phosphate (Urine)

Test/Investigation

Calcium & Phosphate (Urine)

Site(s) or Laboratory offering Test/Investigation

NNUH, QEH, JPUH

Units

mmol/24h

Comments/Precautions

The volume, dates, and times of collection should be noted Acid container required

Sample type

24-hour urine collection bottle (acid preservative)

Turnaround times (TAT) Urgent/Routine/GP or OPD

24-hr urine calcium: Within 4 hours/8 hours 24-hr urine phosphate: At least once weekly

Reference intervals (adult unless stated)

Urine calcium excretion: 2.5 – 7.5 mmol/24h
Urine phosphate excretion: 15 – 50 mmol/24h